30=20-2q

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Solution for 30=20-2q equation:


Simplifying
30 = 20 + -2q

Solving
30 = 20 + -2q

Solving for variable 'q'.

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

Add '2q' to each side of the equation.
30 + 2q = 20 + -2q + 2q

Combine like terms: -2q + 2q = 0
30 + 2q = 20 + 0
30 + 2q = 20

Add '-30' to each side of the equation.
30 + -30 + 2q = 20 + -30

Combine like terms: 30 + -30 = 0
0 + 2q = 20 + -30
2q = 20 + -30

Combine like terms: 20 + -30 = -10
2q = -10

Divide each side by '2'.
q = -5

Simplifying
q = -5

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