7a+21=-7

Simple and best practice solution for 7a+21=-7 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 7a+21=-7 equation: 



7a+21=-7

We move all terms to the left:

7a+21-(-7)=0

We add all the numbers together, and all the variables

7a+28=0

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

7a=-28

a=-28/7

a=-4

See similar equations:

| 7.3y-5.18=-8.48 | | 8x-3x=12.5 | | 8k-66=38 | | 21-17=2(x-8) | | 16=4n-4 | | 8x-7x+6=10x. | | 16=4n-4n= | | (7x+1)=9. | | 2x+6+x=3(x+3) | | 7.3(x+7.1)=4.8+1.7x | | 3(1.14)^x+1=6 | | (3x-5)x3=3 | | 2(2x-2)=6(3x+2) | | z=-2.1 | | 5(3x+6)+4=3x | | 1/4*x+3/8*x=5 | | -13(5)+7/8*x=-79 | | 10+y/6=3y/9-4 | | 8x-(4x-8)=44 | | -13(5)+(-7/8*x)=-79 | | 4x+1/3=2x-2/3 | | -13*x+(-7/8*x)=-79 | | 10u=5u+45 | | -13*x+(-7/8x)=-79 | | 2x-1÷3=5x-6÷4 | | -13*x+(-7/8)=-79 | | 2(4-2r))-5=-2(r+5)+8r | | 25-6x=10 | | 5(2x-3)=4x-15+6x | | 40=2/x | | 5(2x-3)=4x-15+6x  | | 5(2x-5)=4x-15+6x |

Equations solver categories