7.5(4+6.5r)=15.5

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Solution for 7.5(4+6.5r)=15.5 equation: 


Simplifying
7.5(4 + 6.5r) = 15.5
(4 * 7.5 + 6.5r * 7.5) = 15.5
(30 + 48.75r) = 15.5

Solving
30 + 48.75r = 15.5

Solving for variable 'r'.

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

Add '-30' to each side of the equation.
30 + -30 + 48.75r = 15.5 + -30

Combine like terms: 30 + -30 = 0
0 + 48.75r = 15.5 + -30
48.75r = 15.5 + -30

Combine like terms: 15.5 + -30 = -14.5
48.75r = -14.5

Divide each side by '48.75'.
r = -0.2974358974

Simplifying
r = -0.2974358974

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