3a-2b=21

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


Simplifying
3a + -2b = 21

Solving
3a + -2b = 21

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '2b' to each side of the equation.
3a + -2b + 2b = 21 + 2b

Combine like terms: -2b + 2b = 0
3a + 0 = 21 + 2b
3a = 21 + 2b

Divide each side by '3'.
a = 7 + 0.6666666667b

Simplifying
a = 7 + 0.6666666667b

See similar equations:

| 7=4y-3y+4 | | (2x-x^2)=0 | | 8p-7p=16 | | sqrtx-6=0 | | 2x+3[-3]=6 | | 9x+25=4x+50 | | 4y-3y+3=-6 | | 45x^3-40x^2+9x-8= | | n^2-1=3 | | -3x=y+51 | | 59.95-x-11.99= | | 3v^2+18v=48 | | 5d-4d=18 | | 22v+3(8-v)=-16 | | 8x-2=x+9 | | 59.95-x=11.99 | | 5x+7=5y-3 | | 59.95-x= | | -8(x-2)=4(x-2) | | -7x-15+4x+24=-3 | | p^2=64 | | v=5d+m | | =(x+3)+(2x+2) | | 5-x=3x+21 | | 3y^3+15y^2=18y | | (6-2n)-(2+2n^4)= | | 11x-13=64+4x | | (x+3)+(2x+2)= | | 7z-24=6+z | | 2r-6=0 | | 4(5x+4)=6 | | 6(3x-3)+3(18-3x)-4(2x+5)=-1 |

Equations solver categories