-15=4+7r-5

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Solution for -15=4+7r-5 equation:


Simplifying
-15 = 4 + 7r + -5

Reorder the terms:
-15 = 4 + -5 + 7r

Combine like terms: 4 + -5 = -1
-15 = -1 + 7r

Solving
-15 = -1 + 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 + -7r = -1 + 7r + -7r

Combine like terms: 7r + -7r = 0
-15 + -7r = -1 + 0
-15 + -7r = -1

Add '15' to each side of the equation.
-15 + 15 + -7r = -1 + 15

Combine like terms: -15 + 15 = 0
0 + -7r = -1 + 15
-7r = -1 + 15

Combine like terms: -1 + 15 = 14
-7r = 14

Divide each side by '-7'.
r = -2

Simplifying
r = -2

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