9r=10r-7

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Solution for 9r=10r-7 equation:


Simplifying
9r = 10r + -7

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

Solving
9r = -7 + 10r

Solving for variable 'r'.

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

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

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

Combine like terms: 10r + -10r = 0
-1r = -7 + 0
-1r = -7

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

Simplifying
r = 7

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