40-r=24

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Solution for 40-r=24 equation:


Simplifying
40 + -1r = 24

Solving
40 + -1r = 24

Solving for variable 'r'.

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

Add '-40' to each side of the equation.
40 + -40 + -1r = 24 + -40

Combine like terms: 40 + -40 = 0
0 + -1r = 24 + -40
-1r = 24 + -40

Combine like terms: 24 + -40 = -16
-1r = -16

Divide each side by '-1'.
r = 16

Simplifying
r = 16

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