-3r+55=2r+15

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Solution for -3r+55=2r+15 equation:


Simplifying
-3r + 55 = 2r + 15

Reorder the terms:
55 + -3r = 2r + 15

Reorder the terms:
55 + -3r = 15 + 2r

Solving
55 + -3r = 15 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
55 + -3r + -2r = 15 + 2r + -2r

Combine like terms: -3r + -2r = -5r
55 + -5r = 15 + 2r + -2r

Combine like terms: 2r + -2r = 0
55 + -5r = 15 + 0
55 + -5r = 15

Add '-55' to each side of the equation.
55 + -55 + -5r = 15 + -55

Combine like terms: 55 + -55 = 0
0 + -5r = 15 + -55
-5r = 15 + -55

Combine like terms: 15 + -55 = -40
-5r = -40

Divide each side by '-5'.
r = 8

Simplifying
r = 8

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