-10r-13=-9r+7

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Solution for -10r-13=-9r+7 equation:


Simplifying
-10r + -13 = -9r + 7

Reorder the terms:
-13 + -10r = -9r + 7

Reorder the terms:
-13 + -10r = 7 + -9r

Solving
-13 + -10r = 7 + -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.
-13 + -10r + 9r = 7 + -9r + 9r

Combine like terms: -10r + 9r = -1r
-13 + -1r = 7 + -9r + 9r

Combine like terms: -9r + 9r = 0
-13 + -1r = 7 + 0
-13 + -1r = 7

Add '13' to each side of the equation.
-13 + 13 + -1r = 7 + 13

Combine like terms: -13 + 13 = 0
0 + -1r = 7 + 13
-1r = 7 + 13

Combine like terms: 7 + 13 = 20
-1r = 20

Divide each side by '-1'.
r = -20

Simplifying
r = -20

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