112=7(1+3b)

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Solution for 112=7(1+3b) equation:


Simplifying
112 = 7(1 + 3b)
112 = (1 * 7 + 3b * 7)
112 = (7 + 21b)

Solving
112 = 7 + 21b

Solving for variable 'b'.

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

Add '-21b' to each side of the equation.
112 + -21b = 7 + 21b + -21b

Combine like terms: 21b + -21b = 0
112 + -21b = 7 + 0
112 + -21b = 7

Add '-112' to each side of the equation.
112 + -112 + -21b = 7 + -112

Combine like terms: 112 + -112 = 0
0 + -21b = 7 + -112
-21b = 7 + -112

Combine like terms: 7 + -112 = -105
-21b = -105

Divide each side by '-21'.
b = 5

Simplifying
b = 5

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