-7b-20=-5(2b+1)

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Solution for -7b-20=-5(2b+1) equation:


Simplifying
-7b + -20 = -5(2b + 1)

Reorder the terms:
-20 + -7b = -5(2b + 1)

Reorder the terms:
-20 + -7b = -5(1 + 2b)
-20 + -7b = (1 * -5 + 2b * -5)
-20 + -7b = (-5 + -10b)

Solving
-20 + -7b = -5 + -10b

Solving for variable 'b'.

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

Add '10b' to each side of the equation.
-20 + -7b + 10b = -5 + -10b + 10b

Combine like terms: -7b + 10b = 3b
-20 + 3b = -5 + -10b + 10b

Combine like terms: -10b + 10b = 0
-20 + 3b = -5 + 0
-20 + 3b = -5

Add '20' to each side of the equation.
-20 + 20 + 3b = -5 + 20

Combine like terms: -20 + 20 = 0
0 + 3b = -5 + 20
3b = -5 + 20

Combine like terms: -5 + 20 = 15
3b = 15

Divide each side by '3'.
b = 5

Simplifying
b = 5

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