18+6(r+7)=180

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Solution for 18+6(r+7)=180 equation:


Simplifying
18 + 6(r + 7) = 180

Reorder the terms:
18 + 6(7 + r) = 180
18 + (7 * 6 + r * 6) = 180
18 + (42 + 6r) = 180

Combine like terms: 18 + 42 = 60
60 + 6r = 180

Solving
60 + 6r = 180

Solving for variable 'r'.

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

Add '-60' to each side of the equation.
60 + -60 + 6r = 180 + -60

Combine like terms: 60 + -60 = 0
0 + 6r = 180 + -60
6r = 180 + -60

Combine like terms: 180 + -60 = 120
6r = 120

Divide each side by '6'.
r = 20

Simplifying
r = 20

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