3r-15=-3+7r

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Solution for 3r-15=-3+7r equation:


Simplifying
3r + -15 = -3 + 7r

Reorder the terms:
-15 + 3r = -3 + 7r

Solving
-15 + 3r = -3 + 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.
-15 + 3r + -7r = -3 + 7r + -7r

Combine like terms: 3r + -7r = -4r
-15 + -4r = -3 + 7r + -7r

Combine like terms: 7r + -7r = 0
-15 + -4r = -3 + 0
-15 + -4r = -3

Add '15' to each side of the equation.
-15 + 15 + -4r = -3 + 15

Combine like terms: -15 + 15 = 0
0 + -4r = -3 + 15
-4r = -3 + 15

Combine like terms: -3 + 15 = 12
-4r = 12

Divide each side by '-4'.
r = -3

Simplifying
r = -3

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