87-r=43

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Solution for 87-r=43 equation: 


Simplifying
87 + -1r = 43

Solving
87 + -1r = 43

Solving for variable 'r'.

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

Add '-87' to each side of the equation.
87 + -87 + -1r = 43 + -87

Combine like terms: 87 + -87 = 0
0 + -1r = 43 + -87
-1r = 43 + -87

Combine like terms: 43 + -87 = -44
-1r = -44

Divide each side by '-1'.
r = 44

Simplifying
r = 44

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