5q+7=3q+21

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Solution for 5q+7=3q+21 equation:


Simplifying
5q + 7 = 3q + 21

Reorder the terms:
7 + 5q = 3q + 21

Reorder the terms:
7 + 5q = 21 + 3q

Solving
7 + 5q = 21 + 3q

Solving for variable 'q'.

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

Add '-3q' to each side of the equation.
7 + 5q + -3q = 21 + 3q + -3q

Combine like terms: 5q + -3q = 2q
7 + 2q = 21 + 3q + -3q

Combine like terms: 3q + -3q = 0
7 + 2q = 21 + 0
7 + 2q = 21

Add '-7' to each side of the equation.
7 + -7 + 2q = 21 + -7

Combine like terms: 7 + -7 = 0
0 + 2q = 21 + -7
2q = 21 + -7

Combine like terms: 21 + -7 = 14
2q = 14

Divide each side by '2'.
q = 7

Simplifying
q = 7

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