-31-7b=5(2b+4)

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Solution for -31-7b=5(2b+4) equation:


Simplifying
-31 + -7b = 5(2b + 4)

Reorder the terms:
-31 + -7b = 5(4 + 2b)
-31 + -7b = (4 * 5 + 2b * 5)
-31 + -7b = (20 + 10b)

Solving
-31 + -7b = 20 + 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.
-31 + -7b + -10b = 20 + 10b + -10b

Combine like terms: -7b + -10b = -17b
-31 + -17b = 20 + 10b + -10b

Combine like terms: 10b + -10b = 0
-31 + -17b = 20 + 0
-31 + -17b = 20

Add '31' to each side of the equation.
-31 + 31 + -17b = 20 + 31

Combine like terms: -31 + 31 = 0
0 + -17b = 20 + 31
-17b = 20 + 31

Combine like terms: 20 + 31 = 51
-17b = 51

Divide each side by '-17'.
b = -3

Simplifying
b = -3

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