8.5=r+-3.5

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Solution for 8.5=r+-3.5 equation:


Simplifying
8.5 = r + -3.5

Reorder the terms:
8.5 = -3.5 + r

Solving
8.5 = -3.5 + 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.
8.5 + -1r = -3.5 + r + -1r

Combine like terms: r + -1r = 0
8.5 + -1r = -3.5 + 0
8.5 + -1r = -3.5

Add '-8.5' to each side of the equation.
8.5 + -8.5 + -1r = -3.5 + -8.5

Combine like terms: 8.5 + -8.5 = 0.0
0.0 + -1r = -3.5 + -8.5
-1r = -3.5 + -8.5

Combine like terms: -3.5 + -8.5 = -12
-1r = -12

Divide each side by '-1'.
r = 12

Simplifying
r = 12

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