9r=40r

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Solution for 9r=40r equation: 


Simplifying
9r = 40r

Solving
9r = 40r

Solving for variable 'r'.

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

Add '-40r' to each side of the equation.
9r + -40r = 40r + -40r

Combine like terms: 9r + -40r = -31r
-31r = 40r + -40r

Combine like terms: 40r + -40r = 0
-31r = 0

Divide each side by '-31'.
r = 0

Simplifying
r = 0

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