0.02q+2.1r=3.16-.2r

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Solution for 0.02q+2.1r=3.16-.2r equation: 


Simplifying
0.02q + 2.1r = 3.16 + -0.2r

Solving
0.02q + 2.1r = 3.16 + -0.2r

Solving for variable 'q'.

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

Add '-2.1r' to each side of the equation.
0.02q + 2.1r + -2.1r = 3.16 + -0.2r + -2.1r

Combine like terms: 2.1r + -2.1r = 0.0
0.02q + 0.0 = 3.16 + -0.2r + -2.1r
0.02q = 3.16 + -0.2r + -2.1r

Combine like terms: -0.2r + -2.1r = -2.3r
0.02q = 3.16 + -2.3r

Divide each side by '0.02'.
q = 158 + -115r

Simplifying
q = 158 + -115r

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