21b=3b-12

Simple and best practice solution for 21b=3b-12 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 21b=3b-12 equation: 


Simplifying
21b = 3b + -12

Reorder the terms:
21b = -12 + 3b

Solving
21b = -12 + 3b

Solving for variable 'b'.

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

Add '-3b' to each side of the equation.
21b + -3b = -12 + 3b + -3b

Combine like terms: 21b + -3b = 18b
18b = -12 + 3b + -3b

Combine like terms: 3b + -3b = 0
18b = -12 + 0
18b = -12

Divide each side by '18'.
b = -0.6666666667

Simplifying
b = -0.6666666667

See similar equations:

| 6(y-6)-4=8 | | 4y^2=-17+42 | | 12=3a-5b | | 12(3+y)=6(2y+8) | | 13x-3=3x+2+55 | | 10r^3+46r^2-20r=0 | | 3x-y=2x+3y-9 | | 8(x-1)=-7(x+2)+33 | | 8(h+6)-8(h-2)= | | 9x+7=2x-84 | | -3=5k+4 | | 2x-8(7-x)=13 | | 4x+6-3x=9 | | (x-4)(x+2)=-4(x-4) | | 11y=19y-7 | | 4y-9=24-4y | | 2s-12+25=4s-12 | | 7y=42y+15 | | 10(-60)-6y=-60 | | .5m*6p*n= | | 200.00+0.05=75.00+0.10 | | 32n=12 | | 7y=42y+5 | | 200+0.05x=400 | | -2(x-1)=2(3x-7) | | -0.25(y+5)=11x | | 0.5x+0.5=0.8x-0.1 | | 3(-15)-5y=-15 | | 2b*a*a= | | log(4x+9)=1+log(x-4) | | (4c+6)(4c-6)= | | 4a(9a+5)=0 |

Equations solver categories