5(r+3)-2(4r+2)=3r+r

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Solution for 5(r+3)-2(4r+2)=3r+r equation:


Simplifying
5(r + 3) + -2(4r + 2) = 3r + r

Reorder the terms:
5(3 + r) + -2(4r + 2) = 3r + r
(3 * 5 + r * 5) + -2(4r + 2) = 3r + r
(15 + 5r) + -2(4r + 2) = 3r + r

Reorder the terms:
15 + 5r + -2(2 + 4r) = 3r + r
15 + 5r + (2 * -2 + 4r * -2) = 3r + r
15 + 5r + (-4 + -8r) = 3r + r

Reorder the terms:
15 + -4 + 5r + -8r = 3r + r

Combine like terms: 15 + -4 = 11
11 + 5r + -8r = 3r + r

Combine like terms: 5r + -8r = -3r
11 + -3r = 3r + r

Combine like terms: 3r + r = 4r
11 + -3r = 4r

Solving
11 + -3r = 4r

Solving for variable 'r'.

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

Add '-4r' to each side of the equation.
11 + -3r + -4r = 4r + -4r

Combine like terms: -3r + -4r = -7r
11 + -7r = 4r + -4r

Combine like terms: 4r + -4r = 0
11 + -7r = 0

Add '-11' to each side of the equation.
11 + -11 + -7r = 0 + -11

Combine like terms: 11 + -11 = 0
0 + -7r = 0 + -11
-7r = 0 + -11

Combine like terms: 0 + -11 = -11
-7r = -11

Divide each side by '-7'.
r = 1.571428571

Simplifying
r = 1.571428571

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