3r+5r=-15+2+5r-5

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Solution for 3r+5r=-15+2+5r-5 equation: 


Simplifying
3r + 5r = -15 + 2 + 5r + -5

Combine like terms: 3r + 5r = 8r
8r = -15 + 2 + 5r + -5

Reorder the terms:
8r = -15 + 2 + -5 + 5r

Combine like terms: -15 + 2 = -13
8r = -13 + -5 + 5r

Combine like terms: -13 + -5 = -18
8r = -18 + 5r

Solving
8r = -18 + 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
8r + -5r = -18 + 5r + -5r

Combine like terms: 8r + -5r = 3r
3r = -18 + 5r + -5r

Combine like terms: 5r + -5r = 0
3r = -18 + 0
3r = -18

Divide each side by '3'.
r = -6

Simplifying
r = -6

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