3r-2=7r+18

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Solution for 3r-2=7r+18 equation:


Simplifying
3r + -2 = 7r + 18

Reorder the terms:
-2 + 3r = 7r + 18

Reorder the terms:
-2 + 3r = 18 + 7r

Solving
-2 + 3r = 18 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
-2 + 3r + -7r = 18 + 7r + -7r

Combine like terms: 3r + -7r = -4r
-2 + -4r = 18 + 7r + -7r

Combine like terms: 7r + -7r = 0
-2 + -4r = 18 + 0
-2 + -4r = 18

Add '2' to each side of the equation.
-2 + 2 + -4r = 18 + 2

Combine like terms: -2 + 2 = 0
0 + -4r = 18 + 2
-4r = 18 + 2

Combine like terms: 18 + 2 = 20
-4r = 20

Divide each side by '-4'.
r = -5

Simplifying
r = -5

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