17=72-r

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Solution for 17=72-r equation:


Simplifying
17 = 72 + -1r

Solving
17 = 72 + -1r

Solving for variable 'r'.

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

Add 'r' to each side of the equation.
17 + r = 72 + -1r + r

Combine like terms: -1r + r = 0
17 + r = 72 + 0
17 + r = 72

Add '-17' to each side of the equation.
17 + -17 + r = 72 + -17

Combine like terms: 17 + -17 = 0
0 + r = 72 + -17
r = 72 + -17

Combine like terms: 72 + -17 = 55
r = 55

Simplifying
r = 55

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