10+(-3r)+(-9r)+5r=

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Solution for 10+(-3r)+(-9r)+5r= equation: 


Simplifying
10 + (-3r) + (-9r) + 5r = 0

Combine like terms: (-3r) + (-9r) = -12r
10 + -12r + 5r = 0

Combine like terms: -12r + 5r = -7r
10 + -7r = 0

Solving
10 + -7r = 0

Solving for variable 'r'.

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

Add '-10' to each side of the equation.
10 + -10 + -7r = 0 + -10

Combine like terms: 10 + -10 = 0
0 + -7r = 0 + -10
-7r = 0 + -10

Combine like terms: 0 + -10 = -10
-7r = -10

Divide each side by '-7'.
r = 1.428571429

Simplifying
r = 1.428571429

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