57+20r=697

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Solution for 57+20r=697 equation: 


Simplifying
57 + 20r = 697

Solving
57 + 20r = 697

Solving for variable 'r'.

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

Add '-57' to each side of the equation.
57 + -57 + 20r = 697 + -57

Combine like terms: 57 + -57 = 0
0 + 20r = 697 + -57
20r = 697 + -57

Combine like terms: 697 + -57 = 640
20r = 640

Divide each side by '20'.
r = 32

Simplifying
r = 32

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