3x+42=3(x-b)

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Solution for 3x+42=3(x-b) equation:


Simplifying
3x + 42 = 3(x + -1b)

Reorder the terms:
42 + 3x = 3(x + -1b)

Reorder the terms:
42 + 3x = 3(-1b + x)
42 + 3x = (-1b * 3 + x * 3)
42 + 3x = (-3b + 3x)

Add '-3x' to each side of the equation.
42 + 3x + -3x = -3b + 3x + -3x

Combine like terms: 3x + -3x = 0
42 + 0 = -3b + 3x + -3x
42 = -3b + 3x + -3x

Combine like terms: 3x + -3x = 0
42 = -3b + 0
42 = -3b

Solving
42 = -3b

Solving for variable 'b'.

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

Add '3b' to each side of the equation.
42 + 3b = -3b + 3b

Combine like terms: -3b + 3b = 0
42 + 3b = 0

Add '-42' to each side of the equation.
42 + -42 + 3b = 0 + -42

Combine like terms: 42 + -42 = 0
0 + 3b = 0 + -42
3b = 0 + -42

Combine like terms: 0 + -42 = -42
3b = -42

Divide each side by '3'.
b = -14

Simplifying
b = -14

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