18=9r+7r

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Solution for 18=9r+7r equation:


Simplifying
18 = 9r + 7r

Combine like terms: 9r + 7r = 16r
18 = 16r

Solving
18 = 16r

Solving for variable 'r'.

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

Add '-16r' to each side of the equation.
18 + -16r = 16r + -16r

Combine like terms: 16r + -16r = 0
18 + -16r = 0

Add '-18' to each side of the equation.
18 + -18 + -16r = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -16r = 0 + -18
-16r = 0 + -18

Combine like terms: 0 + -18 = -18
-16r = -18

Divide each side by '-16'.
r = 1.125

Simplifying
r = 1.125

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