9+8.5(1+3.5r)=16.5

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Solution for 9+8.5(1+3.5r)=16.5 equation:


Simplifying
9 + 8.5(1 + 3.5r) = 16.5
9 + (1 * 8.5 + 3.5r * 8.5) = 16.5
9 + (8.5 + 29.75r) = 16.5

Combine like terms: 9 + 8.5 = 17.5
17.5 + 29.75r = 16.5

Solving
17.5 + 29.75r = 16.5

Solving for variable 'r'.

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

Add '-17.5' to each side of the equation.
17.5 + -17.5 + 29.75r = 16.5 + -17.5

Combine like terms: 17.5 + -17.5 = 0.0
0.0 + 29.75r = 16.5 + -17.5
29.75r = 16.5 + -17.5

Combine like terms: 16.5 + -17.5 = -1
29.75r = -1

Divide each side by '29.75'.
r = -0.03361344538

Simplifying
r = -0.03361344538

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