-6.2(10r+9)+3.2(7r+5)=

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Solution for -6.2(10r+9)+3.2(7r+5)= equation:


Simplifying
-6.2(10r + 9) + 3.2(7r + 5) = 0

Reorder the terms:
-6.2(9 + 10r) + 3.2(7r + 5) = 0
(9 * -6.2 + 10r * -6.2) + 3.2(7r + 5) = 0
(-55.8 + -62r) + 3.2(7r + 5) = 0

Reorder the terms:
-55.8 + -62r + 3.2(5 + 7r) = 0
-55.8 + -62r + (5 * 3.2 + 7r * 3.2) = 0
-55.8 + -62r + (16 + 22.4r) = 0

Reorder the terms:
-55.8 + 16 + -62r + 22.4r = 0

Combine like terms: -55.8 + 16 = -39.8
-39.8 + -62r + 22.4r = 0

Combine like terms: -62r + 22.4r = -39.6r
-39.8 + -39.6r = 0

Solving
-39.8 + -39.6r = 0

Solving for variable 'r'.

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

Add '39.8' to each side of the equation.
-39.8 + 39.8 + -39.6r = 0 + 39.8

Combine like terms: -39.8 + 39.8 = 0.0
0.0 + -39.6r = 0 + 39.8
-39.6r = 0 + 39.8

Combine like terms: 0 + 39.8 = 39.8
-39.6r = 39.8

Divide each side by '-39.6'.
r = -1.005050505

Simplifying
r = -1.005050505

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