-3(q-7)=2+q-21

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Solution for -3(q-7)=2+q-21 equation:


Simplifying
-3(q + -7) = 2 + q + -21

Reorder the terms:
-3(-7 + q) = 2 + q + -21
(-7 * -3 + q * -3) = 2 + q + -21
(21 + -3q) = 2 + q + -21

Reorder the terms:
21 + -3q = 2 + -21 + q

Combine like terms: 2 + -21 = -19
21 + -3q = -19 + q

Solving
21 + -3q = -19 + q

Solving for variable 'q'.

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

Add '-1q' to each side of the equation.
21 + -3q + -1q = -19 + q + -1q

Combine like terms: -3q + -1q = -4q
21 + -4q = -19 + q + -1q

Combine like terms: q + -1q = 0
21 + -4q = -19 + 0
21 + -4q = -19

Add '-21' to each side of the equation.
21 + -21 + -4q = -19 + -21

Combine like terms: 21 + -21 = 0
0 + -4q = -19 + -21
-4q = -19 + -21

Combine like terms: -19 + -21 = -40
-4q = -40

Divide each side by '-4'.
q = 10

Simplifying
q = 10

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