7-12(3-b)=31

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


Simplifying
7 + -12(3 + -1b) = 31
7 + (3 * -12 + -1b * -12) = 31
7 + (-36 + 12b) = 31

Combine like terms: 7 + -36 = -29
-29 + 12b = 31

Solving
-29 + 12b = 31

Solving for variable 'b'.

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

Add '29' to each side of the equation.
-29 + 29 + 12b = 31 + 29

Combine like terms: -29 + 29 = 0
0 + 12b = 31 + 29
12b = 31 + 29

Combine like terms: 31 + 29 = 60
12b = 60

Divide each side by '12'.
b = 5

Simplifying
b = 5

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