-21-3(2-a)=0

Simple and best practice solution for -21-3(2-a)=0 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 -21-3(2-a)=0 equation:


Simplifying
-21 + -3(2 + -1a) = 0
-21 + (2 * -3 + -1a * -3) = 0
-21 + (-6 + 3a) = 0

Combine like terms: -21 + -6 = -27
-27 + 3a = 0

Solving
-27 + 3a = 0

Solving for variable 'a'.

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

Add '27' to each side of the equation.
-27 + 27 + 3a = 0 + 27

Combine like terms: -27 + 27 = 0
0 + 3a = 0 + 27
3a = 0 + 27

Combine like terms: 0 + 27 = 27
3a = 27

Divide each side by '3'.
a = 9

Simplifying
a = 9

See similar equations:

| x^2-x-6=49 | | 3x-12-54=54 | | 3(a+2)=6+3a | | b-2/5=3/5 | | 10b+5=7b+5 | | 1/3y+3=12 | | y=4(-3)+20 | | 36-x=-45 | | n^2+3n-4=66 | | 14/3(-6/7) | | ((x).25)-x=1350 | | (26/25)*(15/28)*(8/39) | | 2(6x-10)=50 | | n^2+3n-4=33 | | 5/2x-2+x+5 | | -6=10 | | -1/3-(-5) | | 3(5x-2)-(8x-9)=9-(2x+3) | | x-214.12=462.23 | | 48/x=-8 | | 2t^2-18t=0 | | n^2+3n=33 | | 2(x+3)-3=5(x+1)-3x | | -5x+(-60)=15 | | 5+4x=32+1x | | 12(r-2)=366 | | 6x+12(6)=-24 | | 148-2x=25x+16 | | 4(x+3)-3x+3=x+8 | | 3(4a-5)=9 | | 6(5-x)-2(3x-1)=2 | | (-1/3)+y=1 |

Equations solver categories