-21a=42

Simple and best practice solution for -21a=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 -21a=42 equation:


Simplifying
-21a = 42

Solving
-21a = 42

Solving for variable 'a'.

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

Divide each side by '-21'.
a = -2

Simplifying
a = -2

See similar equations:

| 3(x-4)+x+12= | | 60-2x-3x^2=0 | | 9-4a=-5a+5 | | 5=5(1-7x) | | 5(-5+x)=2(x+4) | | 5(-3b-2)-6=-(1-5b)+5 | | 6*8*x=864 | | 15y^2=15 | | v^2-11+30=0v | | 6a+1.5=4.5 | | v^2-11+30=0 | | 3x-3=2x-5 | | -7/3(3w-2)=21 | | 1x=-7 | | -y=x+8 | | X-8x+4+2x+1= | | -4(x+y)+(x-y)= | | a/2-4=6 | | log(x)= | | 2logx= | | log[3](4x-15)=5 | | 5p-2p=11 | | 2c^2-5c-2=0 | | x+82=1/2+4x+6 | | 3x+57=180 | | 7x+15=10x-12 | | 7y+9=6y+12 | | 5x-4=11-x | | 3x+x=640 | | 3x+-2x+6=17 | | -5x^2+15000-1250000=0 | | 1+2+3+4+5=15 |

Equations solver categories