3(-7r+5)=15+7r

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Solution for 3(-7r+5)=15+7r equation:


Simplifying
3(-7r + 5) = 15 + 7r

Reorder the terms:
3(5 + -7r) = 15 + 7r
(5 * 3 + -7r * 3) = 15 + 7r
(15 + -21r) = 15 + 7r

Add '-15' to each side of the equation.
15 + -15 + -21r = 15 + -15 + 7r

Combine like terms: 15 + -15 = 0
0 + -21r = 15 + -15 + 7r
-21r = 15 + -15 + 7r

Combine like terms: 15 + -15 = 0
-21r = 0 + 7r
-21r = 7r

Solving
-21r = 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
-21r + -7r = 7r + -7r

Combine like terms: -21r + -7r = -28r
-28r = 7r + -7r

Combine like terms: 7r + -7r = 0
-28r = 0

Divide each side by '-28'.
r = 0

Simplifying
r = 0

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