-21=-a+-4a

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



-21=-a+-4a

We move all terms to the left:

-21-(-a+-4a)=0

We add all the numbers together, and all the variables

-(-5a)-21=0

We get rid of parentheses

5a-21=0

We move all terms containing a to the left, all other terms to the right

5a=21

a=21/5

a=4+1/5

See similar equations:

| 5x+8=11-2x | | 2.3+-p=4.1 | | 5x+8=11−2x | | 9x+(480+9x)=480 | | 4x^2-9x-8=2x+1 | | 9x-(480+9x)=480 | | 4+6+9x=7 | | 8=4v+4v | | 3x=9x−10 | | 9x-(480-9x)=480 | | 6x=15^2 | | 3(17x-8)=180 | | 45x+3=95 | | -2-2b=-16 | | 9x+(480-9x)=480 | | 5x+7-3x=47 | | -49=-7/4w | | w-(-500)=961 | | 105=7xx= | | 16x-8x=2 | | -103=-7x+9 | | 77-7x=-21 | | 7k-9k=-27 | | 3.8n-13=1.4n+5* | | t-454=(-53) | | 2x^{2}+6x=39 | | U-1/9+u+1/2=u/3 | | -48=-20-4x | | -2+9g=10g | | x^2+21+17=9x-3 | | 7x-4=12x | | -3y2+4y2=14 |

Equations solver categories