q+21=8q

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Solution for q+21=8q equation:


Simplifying
q + 21 = 8q

Reorder the terms:
21 + q = 8q

Solving
21 + q = 8q

Solving for variable 'q'.

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

Add '-8q' to each side of the equation.
21 + q + -8q = 8q + -8q

Combine like terms: q + -8q = -7q
21 + -7q = 8q + -8q

Combine like terms: 8q + -8q = 0
21 + -7q = 0

Add '-21' to each side of the equation.
21 + -21 + -7q = 0 + -21

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

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

Divide each side by '-7'.
q = 3

Simplifying
q = 3

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