7+12(3+b)=31

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Solution for 7+12(3+b)=31 equation:


Simplifying
7 + 12(3 + b) = 31
7 + (3 * 12 + b * 12) = 31
7 + (36 + 12b) = 31

Combine like terms: 7 + 36 = 43
43 + 12b = 31

Solving
43 + 12b = 31

Solving for variable 'b'.

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

Add '-43' to each side of the equation.
43 + -43 + 12b = 31 + -43

Combine like terms: 43 + -43 = 0
0 + 12b = 31 + -43
12b = 31 + -43

Combine like terms: 31 + -43 = -12
12b = -12

Divide each side by '12'.
b = -1

Simplifying
b = -1

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