28=17-r

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Solution for 28=17-r equation:


Simplifying
28 = 17 + -1r

Solving
28 = 17 + -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.
28 + r = 17 + -1r + r

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

Add '-28' to each side of the equation.
28 + -28 + r = 17 + -28

Combine like terms: 28 + -28 = 0
0 + r = 17 + -28
r = 17 + -28

Combine like terms: 17 + -28 = -11
r = -11

Simplifying
r = -11

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