(21b-8)-5(4b+3)=-2

Simple and best practice solution for (21b-8)-5(4b+3)=-2 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-8)-5(4b+3)=-2 equation:


Simplifying
(21b + -8) + -5(4b + 3) = -2

Reorder the terms:
(-8 + 21b) + -5(4b + 3) = -2

Remove parenthesis around (-8 + 21b)
-8 + 21b + -5(4b + 3) = -2

Reorder the terms:
-8 + 21b + -5(3 + 4b) = -2
-8 + 21b + (3 * -5 + 4b * -5) = -2
-8 + 21b + (-15 + -20b) = -2

Reorder the terms:
-8 + -15 + 21b + -20b = -2

Combine like terms: -8 + -15 = -23
-23 + 21b + -20b = -2

Combine like terms: 21b + -20b = 1b
-23 + 1b = -2

Solving
-23 + 1b = -2

Solving for variable 'b'.

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

Add '23' to each side of the equation.
-23 + 23 + 1b = -2 + 23

Combine like terms: -23 + 23 = 0
0 + 1b = -2 + 23
1b = -2 + 23

Combine like terms: -2 + 23 = 21
1b = 21

Divide each side by '1'.
b = 21

Simplifying
b = 21

See similar equations:

| (2x+35)+x=180 | | -3(1+7x)=-171 | | 5.6+1.2x=2.2x | | 2(3x+3)=2(x-1) | | 135+x=x+25 | | x+55=x+25 | | -7(p-6)=84 | | 120=6x-4 | | 2x+2z=3y+1 | | -4(-6n+6)=144 | | Log[3](5)-Log[3](7)=Log[3] | | -16t^2+9t-46=0 | | 5(2x-4)=2(3x+6) | | -4(6-n+6)=144 | | x=x+25 | | Y=0.25(x-5)(x-25) | | 7(b-6)=-84 | | 6x-4=8+5x | | 5x+2(60)=3x+180 | | 5-2y=y+14 | | n^2-2n-7=-8 | | 2z^2=9x+1 | | 25x+300=63x+25x | | x+(x-25)=90 | | x-15/5 | | 6x+18-3x=60+x+2x | | 7(-6v+2)=182 | | 0.02x+0.03(8000-x)=216 | | In(8x-1)=5 | | 6+x=16+x | | 21-4r=r^2 | | 30=7y-35-6y |

Equations solver categories