-8r+20=-20+2-10r

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Solution for -8r+20=-20+2-10r equation:


Simplifying
-8r + 20 = -20 + 2 + -10r

Reorder the terms:
20 + -8r = -20 + 2 + -10r

Combine like terms: -20 + 2 = -18
20 + -8r = -18 + -10r

Solving
20 + -8r = -18 + -10r

Solving for variable 'r'.

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

Add '10r' to each side of the equation.
20 + -8r + 10r = -18 + -10r + 10r

Combine like terms: -8r + 10r = 2r
20 + 2r = -18 + -10r + 10r

Combine like terms: -10r + 10r = 0
20 + 2r = -18 + 0
20 + 2r = -18

Add '-20' to each side of the equation.
20 + -20 + 2r = -18 + -20

Combine like terms: 20 + -20 = 0
0 + 2r = -18 + -20
2r = -18 + -20

Combine like terms: -18 + -20 = -38
2r = -38

Divide each side by '2'.
r = -19

Simplifying
r = -19

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