7(8-5r)+2r=287

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Solution for 7(8-5r)+2r=287 equation: 


Simplifying
7(8 + -5r) + 2r = 287
(8 * 7 + -5r * 7) + 2r = 287
(56 + -35r) + 2r = 287

Combine like terms: -35r + 2r = -33r
56 + -33r = 287

Solving
56 + -33r = 287

Solving for variable 'r'.

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

Add '-56' to each side of the equation.
56 + -56 + -33r = 287 + -56

Combine like terms: 56 + -56 = 0
0 + -33r = 287 + -56
-33r = 287 + -56

Combine like terms: 287 + -56 = 231
-33r = 231

Divide each side by '-33'.
r = -7

Simplifying
r = -7

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