3(2-a)=21

Simple and best practice solution for 3(2-a)=21 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-a)=21 equation: 


Simplifying
3(2 + -1a) = 21
(2 * 3 + -1a * 3) = 21
(6 + -3a) = 21

Solving
6 + -3a = 21

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 = 21 + -6

Combine like terms: 6 + -6 = 0
0 + -3a = 21 + -6
-3a = 21 + -6

Combine like terms: 21 + -6 = 15
-3a = 15

Divide each side by '-3'.
a = -5

Simplifying
a = -5

See similar equations:

| -12=6(y-3)-8y | | 4x-3=c | | 5g-3-8-5g=0 | | -5/7u=-35 | | x+17=2+8 | | -6/7=3v | | 20=-5/8w | | x-23=5x+13 | | -3(4b+1)=45 | | 169=b+72 | | 27=v-54 | | 9x-(5x+6)=2x-38 | | 2-3x=-25 | | -2x-6=2x | | 3(2p+1)=35 | | 17-30=16-4p | | 111=n+53 | | 3=log(4t) | | X+22=0 | | (ab/7c)^3 | | 71=w-12 | | (X^6)^1/3 | | (V^2+5v)(v^2+6)= | | 6x^2-x-16=0 | | 3e^7x=780 | | 4(1+5t)=24 | | 10x-7+18=6 | | 2x-8x+1=9-6x | | 5(r-12)-24=3(r+2) | | X+2x=228 | | 4z+10yx=0 | | -9+4r=43 |

Equations solver categories