-7(1-4a)-7a=161

Simple and best practice solution for -7(1-4a)-7a=161 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 -7(1-4a)-7a=161 equation:


Simplifying
-7(1 + -4a) + -7a = 161
(1 * -7 + -4a * -7) + -7a = 161
(-7 + 28a) + -7a = 161

Combine like terms: 28a + -7a = 21a
-7 + 21a = 161

Solving
-7 + 21a = 161

Solving for variable 'a'.

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

Add '7' to each side of the equation.
-7 + 7 + 21a = 161 + 7

Combine like terms: -7 + 7 = 0
0 + 21a = 161 + 7
21a = 161 + 7

Combine like terms: 161 + 7 = 168
21a = 168

Divide each side by '21'.
a = 8

Simplifying
a = 8

See similar equations:

| 3(x-4)+2x=3x-20 | | 18=-z-6+5z-12 | | y=180(4-2) | | 15x-5=25 | | -1s-1=8-2s | | 16-6b=2b+4(1-4)b | | 5(y-1)=36 | | (2x+3)(2x+5)=0 | | (6x-2)(x+1)=0 | | 2(4y+6)+5y=9 | | 8-4x=1/4(8x-16) | | -45n(4n+3)=15n(10n-17) | | x^2-6x-29=0 | | 3x-7-5(2x+1)=-x+(6x+24) | | 5x-(2x+8)=4x-12 | | 2+3=3x+2 | | 20f(8f-15)=3(4f-5) | | -78y-78=y-22 | | y=180(3-2) | | 2(4y-8)=8 | | 3x-12=wx+4 | | 5x+57=3x+67 | | x-137=-8x+88 | | 2x^2-10*x= | | 6r-14=5(r-4) | | 2t-1=99 | | 2(2+2x)=3(x-4) | | 4t-2+12=6+12 | | y=180(3x-2) | | 5x^2+10x+40-5x^2-10=0 | | 5x-10+x+7=39 | | 8x+10=-2(-4x-5) |

Equations solver categories