-18.5=-7.5+3.5(r+2.5)

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Solution for -18.5=-7.5+3.5(r+2.5) equation: 


Simplifying
-18.5 = -7.5 + 3.5(r + 2.5)

Reorder the terms:
-18.5 = -7.5 + 3.5(2.5 + r)
-18.5 = -7.5 + (2.5 * 3.5 + r * 3.5)
-18.5 = -7.5 + (8.75 + 3.5r)

Combine like terms: -7.5 + 8.75 = 1.25
-18.5 = 1.25 + 3.5r

Solving
-18.5 = 1.25 + 3.5r

Solving for variable 'r'.

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

Add '-3.5r' to each side of the equation.
-18.5 + -3.5r = 1.25 + 3.5r + -3.5r

Combine like terms: 3.5r + -3.5r = 0.0
-18.5 + -3.5r = 1.25 + 0.0
-18.5 + -3.5r = 1.25

Add '18.5' to each side of the equation.
-18.5 + 18.5 + -3.5r = 1.25 + 18.5

Combine like terms: -18.5 + 18.5 = 0.0
0.0 + -3.5r = 1.25 + 18.5
-3.5r = 1.25 + 18.5

Combine like terms: 1.25 + 18.5 = 19.75
-3.5r = 19.75

Divide each side by '-3.5'.
r = -5.642857143

Simplifying
r = -5.642857143

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