r+9=10r

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Solution for r+9=10r equation:


Simplifying
r + 9 = 10r

Reorder the terms:
9 + r = 10r

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

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

Combine like terms: 10r + -10r = 0
9 + -9r = 0

Add '-9' to each side of the equation.
9 + -9 + -9r = 0 + -9

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

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

Divide each side by '-9'.
r = 1

Simplifying
r = 1

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