9q+3(q-7)=18-q

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Solution for 9q+3(q-7)=18-q equation:


Simplifying
9q + 3(q + -7) = 18 + -1q

Reorder the terms:
9q + 3(-7 + q) = 18 + -1q
9q + (-7 * 3 + q * 3) = 18 + -1q
9q + (-21 + 3q) = 18 + -1q

Reorder the terms:
-21 + 9q + 3q = 18 + -1q

Combine like terms: 9q + 3q = 12q
-21 + 12q = 18 + -1q

Solving
-21 + 12q = 18 + -1q

Solving for variable 'q'.

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

Add 'q' to each side of the equation.
-21 + 12q + q = 18 + -1q + q

Combine like terms: 12q + q = 13q
-21 + 13q = 18 + -1q + q

Combine like terms: -1q + q = 0
-21 + 13q = 18 + 0
-21 + 13q = 18

Add '21' to each side of the equation.
-21 + 21 + 13q = 18 + 21

Combine like terms: -21 + 21 = 0
0 + 13q = 18 + 21
13q = 18 + 21

Combine like terms: 18 + 21 = 39
13q = 39

Divide each side by '13'.
q = 3

Simplifying
q = 3

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