21=19+a

Simple and best practice solution for 21=19+a 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=19+a equation: 



21=19+a

We move all terms to the left:

21-(19+a)=0

We add all the numbers together, and all the variables

-(a+19)+21=0

We get rid of parentheses

-a-19+21=0

We add all the numbers together, and all the variables

-1a+2=0

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

-a=-2

a=-2/-1

a=+2

See similar equations:

| 22=4h–6 | | -23=5f-4f | | y^2-16y-71=0 | | 3y/2-y/3=5(y-4) | | 4(2m-1)=36-2m | | 7(m-2)=2(m+3) | | t+18=28 | | 46=4y | | 11+y-4y=29 | | 2(5p-3)=30 | | 14+6x=-32 | | -12y+8(23+1.5y)=18 | | 2j-1.10=j-3.05 | | f(70)=0.81(70)+168.3 | | 224x-168=290x+120 | | -3b+6=12+3b | | 3(5x+2)=2(4+3x) | | 5(g+6)=3(g-4) | | 6m-10=3m-5 | | 2(3 | | 2(3 | | 15y-12=11y+48 | | 30 | | t-2+3t=3(3t-9) | | x+1+2x+3x+4=19 | | 10x/11-3x/2=33×-x/2+7 | | 7d+5d=29 | | 7m-10=3(m+2) | | D=200-3t^2 | | 2x-7=3(2x-5) | | 4x-7-3x=24 | | 6x+5=10+5x5x+10 |

Equations solver categories