15-4a=-21

Simple and best practice solution for 15-4a=-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 15-4a=-21 equation: 


Simplifying
15 + -4a = -21

Solving
15 + -4a = -21

Solving for variable 'a'.

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

Add '-15' to each side of the equation.
15 + -15 + -4a = -21 + -15

Combine like terms: 15 + -15 = 0
0 + -4a = -21 + -15
-4a = -21 + -15

Combine like terms: -21 + -15 = -36
-4a = -36

Divide each side by '-4'.
a = 9

Simplifying
a = 9

See similar equations:

| w-713=-26 | | x^2-76x+1380=0 | | 5n-2n-2n-n+n=16 | | 1/7-z/6=1/42 | | 30r=450 | | 3x=(1/3)x-6 | | j/-3=9 | | 1-2x-13=12-4x-2x | | x^2-15x-646=0 | | -4s=-56 | | 12.2=4t | | x^2+29x+154=0 | | q-876=-95 | | -19n+16n+2n=16 | | -23v=-276 | | 1x+1y=0 | | m+8.6=6.2 | | u+554=379 | | x^2-25x+154=0 | | -484=22r | | 1.3x+24=76 | | 8=p/9 | | 3x+35=360 | | 52-11x=16+7x | | 5/3*3/2=1/5*n | | -24=w+11 | | -2(2x-4)+3=6x+6 | | n^2+14n+16=4n | | x^2+4y-2x=0 | | 4(-3m+2)+7=-9 | | 4x+5.50y=440 | | Y^2-30=180 |

Equations solver categories