3(7-a)=12

Simple and best practice solution for 3(7-a)=12 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(7-a)=12 equation:


Simplifying
3(7 + -1a) = 12
(7 * 3 + -1a * 3) = 12
(21 + -3a) = 12

Solving
21 + -3a = 12

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 + -3a = 12 + -21

Combine like terms: 21 + -21 = 0
0 + -3a = 12 + -21
-3a = 12 + -21

Combine like terms: 12 + -21 = -9
-3a = -9

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

Simplifying
a = 3

See similar equations:

| 4xn=1 | | 17x+18=90 | | -1n(x+4)+56=-24 | | 5-10z=-9z-12 | | 1/9w+2/7w=1 | | a/9-2=4 | | y=-4(4)-7 | | 5-19z=-12 | | 6y-15-5y=8 | | p/4-6=-8 | | y=-4(3)-7 | | -8+x/4=12 | | y=-4(2)-7 | | y=-4(1)-7 | | X-19=-2x+10 | | 6(5-g)=18 | | 2y=3x+3 | | y=4(4)-7 | | 3-y=2 | | y=4(3)-7 | | Y=x^2-2x+8 | | 3x-10+x=2 | | y=4(2)-7 | | 12y-5=19 | | y=4(1)-7 | | 16+y/8=20 | | -5=-x+2 | | 1/5x+13+x=1/10(x+40)+4 | | y=-3(4)+0 | | y=-3(3)+0 | | n/4-10=-6 | | y=-3(2)+0 |

Equations solver categories