7r-7+8r=-2-7r-8

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Solution for 7r-7+8r=-2-7r-8 equation:


Simplifying
7r + -7 + 8r = -2 + -7r + -8

Reorder the terms:
-7 + 7r + 8r = -2 + -7r + -8

Combine like terms: 7r + 8r = 15r
-7 + 15r = -2 + -7r + -8

Reorder the terms:
-7 + 15r = -2 + -8 + -7r

Combine like terms: -2 + -8 = -10
-7 + 15r = -10 + -7r

Solving
-7 + 15r = -10 + -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.
-7 + 15r + 7r = -10 + -7r + 7r

Combine like terms: 15r + 7r = 22r
-7 + 22r = -10 + -7r + 7r

Combine like terms: -7r + 7r = 0
-7 + 22r = -10 + 0
-7 + 22r = -10

Add '7' to each side of the equation.
-7 + 7 + 22r = -10 + 7

Combine like terms: -7 + 7 = 0
0 + 22r = -10 + 7
22r = -10 + 7

Combine like terms: -10 + 7 = -3
22r = -3

Divide each side by '22'.
r = -0.1363636364

Simplifying
r = -0.1363636364

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