-10r-7=-9r

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Solution for -10r-7=-9r equation:


Simplifying
-10r + -7 = -9r

Reorder the terms:
-7 + -10r = -9r

Solving
-7 + -10r = -9r

Solving for variable 'r'.

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

Add '9r' to each side of the equation.
-7 + -10r + 9r = -9r + 9r

Combine like terms: -10r + 9r = -1r
-7 + -1r = -9r + 9r

Combine like terms: -9r + 9r = 0
-7 + -1r = 0

Add '7' to each side of the equation.
-7 + 7 + -1r = 0 + 7

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

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

Divide each side by '-1'.
r = -7

Simplifying
r = -7

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