3r+8=15

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Solution for 3r+8=15 equation: 


Simplifying
3r + 8 = 15

Reorder the terms:
8 + 3r = 15

Solving
8 + 3r = 15

Solving for variable 'r'.

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

Add '-8' to each side of the equation.
8 + -8 + 3r = 15 + -8

Combine like terms: 8 + -8 = 0
0 + 3r = 15 + -8
3r = 15 + -8

Combine like terms: 15 + -8 = 7
3r = 7

Divide each side by '3'.
r = 2.333333333

Simplifying
r = 2.333333333

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