-2a-5(a+3)=20

Simple and best practice solution for -2a-5(a+3)=20 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 -2a-5(a+3)=20 equation:


Simplifying
-2a + -5(a + 3) = 20

Reorder the terms:
-2a + -5(3 + a) = 20
-2a + (3 * -5 + a * -5) = 20
-2a + (-15 + -5a) = 20

Reorder the terms:
-15 + -2a + -5a = 20

Combine like terms: -2a + -5a = -7a
-15 + -7a = 20

Solving
-15 + -7a = 20

Solving for variable 'a'.

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

Add '15' to each side of the equation.
-15 + 15 + -7a = 20 + 15

Combine like terms: -15 + 15 = 0
0 + -7a = 20 + 15
-7a = 20 + 15

Combine like terms: 20 + 15 = 35
-7a = 35

Divide each side by '-7'.
a = -5

Simplifying
a = -5

See similar equations:

| 14=5+9(x-9) | | 29=j/17 | | a/9-a/5=-16/3 | | 1/x=x/9 | | H/25=27 | | 150x+y=1050 | | 25=c/31 | | 5(2x)-3=24x+27 | | Z-49=70 | | x^3/2-18x^1/2=0 | | 23u=736 | | (3x^2-5x+7)(2x^2+4x-9)= | | Y-170=55 | | (-a-6b+5)2ab= | | .04x+.07(13000-x)=600 | | 150x^3+350x^2+180x+420=0 | | 6n^2=18n+36 | | 3a(a^2+5)-11=a(3a^3+4) | | -2(7-(-2))+6= | | 3t-5-7t-1=2-4t-8 | | 374=c-50 | | 9x+2-11x=-4-13x+6 | | 21x^2-40xy+11y^2=0 | | x(3x+2)(5x-3)(x+2)=0 | | 7-4n=6n+1 | | 16=g/7 | | 6y^2-8y+12-11y^2-8y+6= | | 3y-12=x | | -5p+1=16 | | 3(5+4)-8= | | 4x^2-4x=47 | | 840=5h |

Equations solver categories