31+5b=7(b+3)

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Solution for 31+5b=7(b+3) equation:


Simplifying
31 + 5b = 7(b + 3)

Reorder the terms:
31 + 5b = 7(3 + b)
31 + 5b = (3 * 7 + b * 7)
31 + 5b = (21 + 7b)

Solving
31 + 5b = 21 + 7b

Solving for variable 'b'.

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

Add '-7b' to each side of the equation.
31 + 5b + -7b = 21 + 7b + -7b

Combine like terms: 5b + -7b = -2b
31 + -2b = 21 + 7b + -7b

Combine like terms: 7b + -7b = 0
31 + -2b = 21 + 0
31 + -2b = 21

Add '-31' to each side of the equation.
31 + -31 + -2b = 21 + -31

Combine like terms: 31 + -31 = 0
0 + -2b = 21 + -31
-2b = 21 + -31

Combine like terms: 21 + -31 = -10
-2b = -10

Divide each side by '-2'.
b = 5

Simplifying
b = 5

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