3=12-.2*q

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Solution for 3=12-.2*q equation:


Simplifying
3 = 12 + -0.2q

Solving
3 = 12 + -0.2q

Solving for variable 'q'.

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

Add '0.2q' to each side of the equation.
3 + 0.2q = 12 + -0.2q + 0.2q

Combine like terms: -0.2q + 0.2q = 0.0
3 + 0.2q = 12 + 0.0
3 + 0.2q = 12

Add '-3' to each side of the equation.
3 + -3 + 0.2q = 12 + -3

Combine like terms: 3 + -3 = 0
0 + 0.2q = 12 + -3
0.2q = 12 + -3

Combine like terms: 12 + -3 = 9
0.2q = 9

Divide each side by '0.2'.
q = 45

Simplifying
q = 45

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