74-9-2r=18

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Solution for 74-9-2r=18 equation: 


Simplifying
74 + -9 + -2r = 18

Combine like terms: 74 + -9 = 65
65 + -2r = 18

Solving
65 + -2r = 18

Solving for variable 'r'.

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

Add '-65' to each side of the equation.
65 + -65 + -2r = 18 + -65

Combine like terms: 65 + -65 = 0
0 + -2r = 18 + -65
-2r = 18 + -65

Combine like terms: 18 + -65 = -47
-2r = -47

Divide each side by '-2'.
r = 23.5

Simplifying
r = 23.5

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