3a-3(7+5a)=9(2+9)

Simple and best practice solution for 3a-3(7+5a)=9(2+9) 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-3(7+5a)=9(2+9) equation:


Simplifying
3a + -3(7 + 5a) = 9(2 + 9)
3a + (7 * -3 + 5a * -3) = 9(2 + 9)
3a + (-21 + -15a) = 9(2 + 9)

Reorder the terms:
-21 + 3a + -15a = 9(2 + 9)

Combine like terms: 3a + -15a = -12a
-21 + -12a = 9(2 + 9)

Combine like terms: 2 + 9 = 11
-21 + -12a = 9(11)

Multiply 9 * 11
-21 + -12a = 99

Solving
-21 + -12a = 99

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '21' to each side of the equation.
-21 + 21 + -12a = 99 + 21

Combine like terms: -21 + 21 = 0
0 + -12a = 99 + 21
-12a = 99 + 21

Combine like terms: 99 + 21 = 120
-12a = 120

Divide each side by '-12'.
a = -10

Simplifying
a = -10

See similar equations:

| g+2=-12 | | 5x+4(4x-5)=169 | | 16a+14= | | x+60=8x-4 | | -19+x=57 | | 2w-w=15 | | -2x=-104 | | 4x+10y=11.50 | | 50=-5x | | 23=5x-7 | | 3x^3-6x^2-300=0 | | 10+2x=3(3x+1) | | 4a-5b=21 | | 64=(3w+8)w | | 2.93*10-7= | | 4x+3(x-9)=15 | | 27-17=2(x-9) | | 3a*17=180 | | 5a+3b=17 | | -2(7x-15)=18+2x | | +32x=+45 | | 64=2(3(w+8))+2w | | -7x+4x+15-9x= | | 21a*51=180 | | 3x+(-x-2)=12 | | 2(d+6)=-1 | | 37x+4x-14=14x-9-2x | | 9y+x=147 | | 8b-b=14 | | 6n^2+3= | | 7x-29-21x=3+(12+2x) | | b^2-7bg-30g^2=0 |

Equations solver categories