15-4q=42-7q

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Solution for 15-4q=42-7q equation:


Simplifying
15 + -4q = 42 + -7q

Solving
15 + -4q = 42 + -7q

Solving for variable 'q'.

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

Add '7q' to each side of the equation.
15 + -4q + 7q = 42 + -7q + 7q

Combine like terms: -4q + 7q = 3q
15 + 3q = 42 + -7q + 7q

Combine like terms: -7q + 7q = 0
15 + 3q = 42 + 0
15 + 3q = 42

Add '-15' to each side of the equation.
15 + -15 + 3q = 42 + -15

Combine like terms: 15 + -15 = 0
0 + 3q = 42 + -15
3q = 42 + -15

Combine like terms: 42 + -15 = 27
3q = 27

Divide each side by '3'.
q = 9

Simplifying
q = 9

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