10+8r=r-18

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Solution for 10+8r=r-18 equation:


Simplifying
10 + 8r = r + -18

Reorder the terms:
10 + 8r = -18 + r

Solving
10 + 8r = -18 + 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.
10 + 8r + -1r = -18 + r + -1r

Combine like terms: 8r + -1r = 7r
10 + 7r = -18 + r + -1r

Combine like terms: r + -1r = 0
10 + 7r = -18 + 0
10 + 7r = -18

Add '-10' to each side of the equation.
10 + -10 + 7r = -18 + -10

Combine like terms: 10 + -10 = 0
0 + 7r = -18 + -10
7r = -18 + -10

Combine like terms: -18 + -10 = -28
7r = -28

Divide each side by '7'.
r = -4

Simplifying
r = -4

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