-1-7r=-5+8r-15r

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Solution for -1-7r=-5+8r-15r equation: 


Simplifying
-1 + -7r = -5 + 8r + -15r

Combine like terms: 8r + -15r = -7r
-1 + -7r = -5 + -7r

Add '7r' to each side of the equation.
-1 + -7r + 7r = -5 + -7r + 7r

Combine like terms: -7r + 7r = 0
-1 + 0 = -5 + -7r + 7r
-1 = -5 + -7r + 7r

Combine like terms: -7r + 7r = 0
-1 = -5 + 0
-1 = -5

Solving
-1 = -5

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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