3+2a=21

Simple and best practice solution for 3+2a=21 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 3+2a=21 equation: 



3+2a=21

We move all terms to the left:

3+2a-(21)=0

We add all the numbers together, and all the variables

2a-18=0

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

2a=18

a=18/2

a=9

See similar equations:

| y=y0.6 | | 8l+2=-86 | | 4a+2=18+28 | | 10-2(3-4c)=12 | | 2l+12=-10 | | 4y+5=20+y | | 3b+7=11+b | | 8t+10=-70 | | 13x+4=9x-12 | | 6g+8=-4 | | 14x+7=5x-11 | | 12x-7=8x+29 | | 6(4w-2)=60 | | 3a+4=7+a | | │2x+5│=21 | | 4+2x=4x-26 | | 16x+7=8x-57 | | 3^3y^2=531441 | | 12x+4=8x-32 | | 5x-9=4x+21 | | 14x+3=5x-78 | | s5+44=154 | | 4y2=+6y | | 5c=2,c=6 | | 3/4x-4/3=0 | | 4h=3=19 | | -6+8x=-2 | | 3(8-12)=8(3)-3y | | 17=8x+-7 | | 4x-6=x×3 | | 2-x/3=3x-1 | | m/4m+9=29 |

Equations solver categories