10r+-5+-2r+9+7r=

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Solution for 10r+-5+-2r+9+7r= equation:


Simplifying
10r + -5 + -2r + 9 + 7r = 0

Reorder the terms:
-5 + 9 + 10r + -2r + 7r = 0

Combine like terms: -5 + 9 = 4
4 + 10r + -2r + 7r = 0

Combine like terms: 10r + -2r = 8r
4 + 8r + 7r = 0

Combine like terms: 8r + 7r = 15r
4 + 15r = 0

Solving
4 + 15r = 0

Solving for variable 'r'.

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

Add '-4' to each side of the equation.
4 + -4 + 15r = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 15r = 0 + -4
15r = 0 + -4

Combine like terms: 0 + -4 = -4
15r = -4

Divide each side by '15'.
r = -0.2666666667

Simplifying
r = -0.2666666667

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