7.5r+2=-8

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Solution for 7.5r+2=-8 equation: 


Simplifying
7.5r + 2 = -8

Reorder the terms:
2 + 7.5r = -8

Solving
2 + 7.5r = -8

Solving for variable 'r'.

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

Add '-2' to each side of the equation.
2 + -2 + 7.5r = -8 + -2

Combine like terms: 2 + -2 = 0
0 + 7.5r = -8 + -2
7.5r = -8 + -2

Combine like terms: -8 + -2 = -10
7.5r = -10

Divide each side by '7.5'.
r = -1.333333333

Simplifying
r = -1.333333333

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