3r-15+5r=-9

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Solution for 3r-15+5r=-9 equation:


Simplifying
3r + -15 + 5r = -9

Reorder the terms:
-15 + 3r + 5r = -9

Combine like terms: 3r + 5r = 8r
-15 + 8r = -9

Solving
-15 + 8r = -9

Solving for variable 'r'.

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

Add '15' to each side of the equation.
-15 + 15 + 8r = -9 + 15

Combine like terms: -15 + 15 = 0
0 + 8r = -9 + 15
8r = -9 + 15

Combine like terms: -9 + 15 = 6
8r = 6

Divide each side by '8'.
r = 0.75

Simplifying
r = 0.75

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