15+r=-28

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Solution for 15+r=-28 equation: 


Simplifying
15 + r = -28

Solving
15 + r = -28

Solving for variable 'r'.

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

Add '-15' to each side of the equation.
15 + -15 + r = -28 + -15

Combine like terms: 15 + -15 = 0
0 + r = -28 + -15
r = -28 + -15

Combine like terms: -28 + -15 = -43
r = -43

Simplifying
r = -43

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