(3a+13)(9a+15)-(11a+7)(3a+13)=0

Simple and best practice solution for (3a+13)(9a+15)-(11a+7)(3a+13)=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for (3a+13)(9a+15)-(11a+7)(3a+13)=0 equation:


Simplifying
(3a + 13)(9a + 15) + -1(11a + 7)(3a + 13) = 0

Reorder the terms:
(13 + 3a)(9a + 15) + -1(11a + 7)(3a + 13) = 0

Reorder the terms:
(13 + 3a)(15 + 9a) + -1(11a + 7)(3a + 13) = 0

Multiply (13 + 3a) * (15 + 9a)
(13(15 + 9a) + 3a * (15 + 9a)) + -1(11a + 7)(3a + 13) = 0
((15 * 13 + 9a * 13) + 3a * (15 + 9a)) + -1(11a + 7)(3a + 13) = 0
((195 + 117a) + 3a * (15 + 9a)) + -1(11a + 7)(3a + 13) = 0
(195 + 117a + (15 * 3a + 9a * 3a)) + -1(11a + 7)(3a + 13) = 0
(195 + 117a + (45a + 27a2)) + -1(11a + 7)(3a + 13) = 0

Combine like terms: 117a + 45a = 162a
(195 + 162a + 27a2) + -1(11a + 7)(3a + 13) = 0

Reorder the terms:
195 + 162a + 27a2 + -1(7 + 11a)(3a + 13) = 0

Reorder the terms:
195 + 162a + 27a2 + -1(7 + 11a)(13 + 3a) = 0

Multiply (7 + 11a) * (13 + 3a)
195 + 162a + 27a2 + -1(7(13 + 3a) + 11a * (13 + 3a)) = 0
195 + 162a + 27a2 + -1((13 * 7 + 3a * 7) + 11a * (13 + 3a)) = 0
195 + 162a + 27a2 + -1((91 + 21a) + 11a * (13 + 3a)) = 0
195 + 162a + 27a2 + -1(91 + 21a + (13 * 11a + 3a * 11a)) = 0
195 + 162a + 27a2 + -1(91 + 21a + (143a + 33a2)) = 0

Combine like terms: 21a + 143a = 164a
195 + 162a + 27a2 + -1(91 + 164a + 33a2) = 0
195 + 162a + 27a2 + (91 * -1 + 164a * -1 + 33a2 * -1) = 0
195 + 162a + 27a2 + (-91 + -164a + -33a2) = 0

Reorder the terms:
195 + -91 + 162a + -164a + 27a2 + -33a2 = 0

Combine like terms: 195 + -91 = 104
104 + 162a + -164a + 27a2 + -33a2 = 0

Combine like terms: 162a + -164a = -2a
104 + -2a + 27a2 + -33a2 = 0

Combine like terms: 27a2 + -33a2 = -6a2
104 + -2a + -6a2 = 0

Solving
104 + -2a + -6a2 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '2'.
2(52 + -1a + -3a2) = 0

Factor a trinomial.
2((4 + -1a)(13 + 3a)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(4 + -1a)' equal to zero and attempt to solve: Simplifying 4 + -1a = 0 Solving 4 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1a = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1a = 0 + -4 -1a = 0 + -4 Combine like terms: 0 + -4 = -4 -1a = -4 Divide each side by '-1'. a = 4 Simplifying a = 4

Subproblem 2

Set the factor '(13 + 3a)' equal to zero and attempt to solve: Simplifying 13 + 3a = 0 Solving 13 + 3a = 0 Move all terms containing a to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + 3a = 0 + -13 Combine like terms: 13 + -13 = 0 0 + 3a = 0 + -13 3a = 0 + -13 Combine like terms: 0 + -13 = -13 3a = -13 Divide each side by '3'. a = -4.333333333 Simplifying a = -4.333333333

Solution

a = {4, -4.333333333}

See similar equations:

| 10+5a=4+2a | | (10a+2)(12a+9)=0 | | (10b+2)(12a+9)=0 | | 5x-10y=55 | | 13+6y=14y+10 | | (35/3)/4 | | (1/3)/4 | | 6r^5-9r^4=0 | | p-.35p=75.68 | | 8w^2=30+34w | | 9+5x=3+18x | | -43/18+253/360 | | 3+12y=2y+9 | | 1/5*253/72 | | 13z+5=8z+11 | | -43/18+253/18 | | 4*253/72 | | 6+13x=7+9x | | (4x+13)(6x+2)=0 | | 1/3*-43/6 | | (4x+13)(10x+14)=0 | | w^2+6w-8281=0 | | x^2-1=-1 | | 7a+15=0 | | 5z+4=0 | | 14y+5=0 | | m-.35=75.68 | | 10b+7=0 | | .35m=75.68 | | 9+3y=6y+8 | | w^2+6w-182=0 | | 15y+6=3y+11 |

Equations solver categories