(4r+7)+(r-2)=180

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Solution for (4r+7)+(r-2)=180 equation:


Simplifying
(4r + 7) + (r + -2) = 180

Reorder the terms:
(7 + 4r) + (r + -2) = 180

Remove parenthesis around (7 + 4r)
7 + 4r + (r + -2) = 180

Reorder the terms:
7 + 4r + (-2 + r) = 180

Remove parenthesis around (-2 + r)
7 + 4r + -2 + r = 180

Reorder the terms:
7 + -2 + 4r + r = 180

Combine like terms: 7 + -2 = 5
5 + 4r + r = 180

Combine like terms: 4r + r = 5r
5 + 5r = 180

Solving
5 + 5r = 180

Solving for variable 'r'.

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

Add '-5' to each side of the equation.
5 + -5 + 5r = 180 + -5

Combine like terms: 5 + -5 = 0
0 + 5r = 180 + -5
5r = 180 + -5

Combine like terms: 180 + -5 = 175
5r = 175

Divide each side by '5'.
r = 35

Simplifying
r = 35

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