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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