8-7(a-1)=9+a

Simple and best practice solution for 8-7(a-1)=9+a 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 8-7(a-1)=9+a equation:


Simplifying
8 + -7(a + -1) = 9 + a

Reorder the terms:
8 + -7(-1 + a) = 9 + a
8 + (-1 * -7 + a * -7) = 9 + a
8 + (7 + -7a) = 9 + a

Combine like terms: 8 + 7 = 15
15 + -7a = 9 + a

Solving
15 + -7a = 9 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
15 + -7a + -1a = 9 + a + -1a

Combine like terms: -7a + -1a = -8a
15 + -8a = 9 + a + -1a

Combine like terms: a + -1a = 0
15 + -8a = 9 + 0
15 + -8a = 9

Add '-15' to each side of the equation.
15 + -15 + -8a = 9 + -15

Combine like terms: 15 + -15 = 0
0 + -8a = 9 + -15
-8a = 9 + -15

Combine like terms: 9 + -15 = -6
-8a = -6

Divide each side by '-8'.
a = 0.75

Simplifying
a = 0.75

See similar equations:

| x/5y=5- | | 3(x-1)=2(3x+5)-7 | | (x-2i)=(3+3i-yi) | | 5y/x=50 | | S=3a-150.1778 | | b-40=20 | | 36+5y-1=14y-14-2y | | -32=-4(9r-8) | | 2+1.25x=10-2.75 | | (-6x+3)+(14x+2)-(3x+7)+(2x-3)= | | 4[5x-3]+10=-1 | | 3s+6-1s=21-1s | | 40x^2-27x=0 | | -41+6x=95+2x | | -5k+3k=32 | | A+6=72 | | -2(300/400) | | 8+4(3x-5)=7x-12+5x | | 2m+3+m-1+m+9=180 | | 3x/2=7/4 | | -5(y-14)=-12 | | 100+x=160 | | -9(7h-2)=32 | | 3x-11=67 | | -3=x/3-33 | | 5x+30=140 | | 14y+21y= | | 4x-2+x=180 | | 2.6n+10.5=4.4n | | (2n-4)(n^2+6n-4)=0 | | 5cosx/2-5sinx=0 | | 7k-6+3k+18=90 |

Equations solver categories