9=r+7-6

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Solution for 9=r+7-6 equation: 


Simplifying
9 = r + 7 + -6

Reorder the terms:
9 = 7 + -6 + r

Combine like terms: 7 + -6 = 1
9 = 1 + r

Solving
9 = 1 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
9 + -1r = 1 + r + -1r

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

Add '-9' to each side of the equation.
9 + -9 + -1r = 1 + -9

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

Combine like terms: 1 + -9 = -8
-1r = -8

Divide each side by '-1'.
r = 8

Simplifying
r = 8

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