r-0.5q=4

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Solution for r-0.5q=4 equation: 


Simplifying
r + -0.5q = 4

Reorder the terms:
-0.5q + r = 4

Solving
-0.5q + r = 4

Solving for variable 'q'.

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

Add '-1r' to each side of the equation.
-0.5q + r + -1r = 4 + -1r

Combine like terms: r + -1r = 0
-0.5q + 0 = 4 + -1r
-0.5q = 4 + -1r

Divide each side by '-0.5'.
q = -8 + 2r

Simplifying
q = -8 + 2r

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