9=5-r-2

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Solution for 9=5-r-2 equation:


Simplifying
9 = 5 + -1r + -2

Reorder the terms:
9 = 5 + -2 + -1r

Combine like terms: 5 + -2 = 3
9 = 3 + -1r

Solving
9 = 3 + -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.
9 + r = 3 + -1r + r

Combine like terms: -1r + r = 0
9 + r = 3 + 0
9 + r = 3

Add '-9' to each side of the equation.
9 + -9 + r = 3 + -9

Combine like terms: 9 + -9 = 0
0 + r = 3 + -9
r = 3 + -9

Combine like terms: 3 + -9 = -6
r = -6

Simplifying
r = -6

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