8r-40=3r-80

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Solution for 8r-40=3r-80 equation:


Simplifying
8r + -40 = 3r + -80

Reorder the terms:
-40 + 8r = 3r + -80

Reorder the terms:
-40 + 8r = -80 + 3r

Solving
-40 + 8r = -80 + 3r

Solving for variable 'r'.

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

Add '-3r' to each side of the equation.
-40 + 8r + -3r = -80 + 3r + -3r

Combine like terms: 8r + -3r = 5r
-40 + 5r = -80 + 3r + -3r

Combine like terms: 3r + -3r = 0
-40 + 5r = -80 + 0
-40 + 5r = -80

Add '40' to each side of the equation.
-40 + 40 + 5r = -80 + 40

Combine like terms: -40 + 40 = 0
0 + 5r = -80 + 40
5r = -80 + 40

Combine like terms: -80 + 40 = -40
5r = -40

Divide each side by '5'.
r = -8

Simplifying
r = -8

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