3(3r-10)=15

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Solution for 3(3r-10)=15 equation: 


Simplifying
3(3r + -10) = 15

Reorder the terms:
3(-10 + 3r) = 15
(-10 * 3 + 3r * 3) = 15
(-30 + 9r) = 15

Solving
-30 + 9r = 15

Solving for variable 'r'.

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

Add '30' to each side of the equation.
-30 + 30 + 9r = 15 + 30

Combine like terms: -30 + 30 = 0
0 + 9r = 15 + 30
9r = 15 + 30

Combine like terms: 15 + 30 = 45
9r = 45

Divide each side by '9'.
r = 5

Simplifying
r = 5

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