3(2-1a)=42

Simple and best practice solution for 3(2-1a)=42 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 3(2-1a)=42 equation: 


Simplifying
3(2 + -1a) = 42
(2 * 3 + -1a * 3) = 42
(6 + -3a) = 42

Solving
6 + -3a = 42

Solving for variable 'a'.

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

Add '-6' to each side of the equation.
6 + -6 + -3a = 42 + -6

Combine like terms: 6 + -6 = 0
0 + -3a = 42 + -6
-3a = 42 + -6

Combine like terms: 42 + -6 = 36
-3a = 36

Divide each side by '-3'.
a = -12

Simplifying
a = -12

See similar equations:

| Y-13=-10(x+7) | | 16x^3+48x^2-25x-75=0 | | 3x+5(2x-1)=6 | | 9u^2-8u+1=0 | | 28-11x=11+6x | | 5.4t+14.6-10.1=12.8-3.5t-0.6 | | 8x-7=4x+1 | | 35x^2+22x-24=0 | | 14-6(6-3c)=4c-c | | 5x-6(2)=33 | | 2(2x+4)=2(.5-x) | | 0=2x^3+6x^2-8 | | 0=3r+4+1 | | 3y+1=15-4y | | 15x^4-13x^2+2=0 | | 301+240=501-16 | | -x^2-3x+54=0 | | 4(x-2)-2=2(y+1)-5 | | 171=-9x-(-99) | | -2(k+9)=20 | | 5(-3)-6y=33 | | Y-160=8.5(x-0) | | 5(x)-6y=33 | | -2 ( k+ 9)= 20 | | 3-g=2 | | 39y-37y-y=26 | | c=(a-b)x | | 5x-(4+1)=5-2x | | 40y-15y-21=29 | | 14-(6x-5)=5(2x-1) | | 3.2-7y=10y-1.89 | | 6x-20=180 |

Equations solver categories