21=a+6+2a

Simple and best practice solution for 21=a+6+2a 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+6+2a equation: 



21=a+6+2a

We move all terms to the left:

21-(a+6+2a)=0

We add all the numbers together, and all the variables

-(3a+6)+21=0

We get rid of parentheses

-3a-6+21=0

We add all the numbers together, and all the variables

-3a+15=0

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

-3a=-15

a=-15/-3

a=+5

See similar equations:

| 7x-1+6x=-13 | | 7=1+2n+8 | | c-(-21)=(-10) | | Y=-150x+750 | | -8=-6n+4n | | 18=v4+16 | | a(a-12)=-36 | | 24=5v+7v | | 2(n)=3n-1 | | f+4^2=5 | | 9x-29=5x-8 | | -8+3(x+2)=-(-7+9)-9 | | 5x+18+15x=2-2x-20 | | 4q+17=15 | | 3.2+10m=7.18 | | 6x+10-5x=2x+13 | | -10v+8=158 | | 5(2x-9)=-35 | | y+9=015 | | 2.1x=19 | | 6(x-3/2=3(x+8)/12 | | 2=x^2-1 | | 3.6x=15.2 | | 3.9x=8.8 | | 1210=n/2=(13+97) | | 3.9x=8.73 | | 3(5x-3)=6x-3 | | 10x-14-2x=6x-10 | | 18x-12=6+9x | | 3x-1=4x-8-x | | 2+18=-4(9x-5) | | 4x+3-2x/5=6 |

Equations solver categories