3r+8+7r=3(5+2r)

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Solution for 3r+8+7r=3(5+2r) equation:


Simplifying
3r + 8 + 7r = 3(5 + 2r)

Reorder the terms:
8 + 3r + 7r = 3(5 + 2r)

Combine like terms: 3r + 7r = 10r
8 + 10r = 3(5 + 2r)
8 + 10r = (5 * 3 + 2r * 3)
8 + 10r = (15 + 6r)

Solving
8 + 10r = 15 + 6r

Solving for variable 'r'.

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

Add '-6r' to each side of the equation.
8 + 10r + -6r = 15 + 6r + -6r

Combine like terms: 10r + -6r = 4r
8 + 4r = 15 + 6r + -6r

Combine like terms: 6r + -6r = 0
8 + 4r = 15 + 0
8 + 4r = 15

Add '-8' to each side of the equation.
8 + -8 + 4r = 15 + -8

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

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

Divide each side by '4'.
r = 1.75

Simplifying
r = 1.75

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