84=-6-r

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Solution for 84=-6-r equation:


Simplifying
84 = -6 + -1r

Solving
84 = -6 + -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.
84 + r = -6 + -1r + r

Combine like terms: -1r + r = 0
84 + r = -6 + 0
84 + r = -6

Add '-84' to each side of the equation.
84 + -84 + r = -6 + -84

Combine like terms: 84 + -84 = 0
0 + r = -6 + -84
r = -6 + -84

Combine like terms: -6 + -84 = -90
r = -90

Simplifying
r = -90

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