7*(r+1)-2r=3*(r+5)

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Solution for 7*(r+1)-2r=3*(r+5) equation:


Simplifying
7(r + 1) + -2r = 3(r + 5)

Reorder the terms:
7(1 + r) + -2r = 3(r + 5)
(1 * 7 + r * 7) + -2r = 3(r + 5)
(7 + 7r) + -2r = 3(r + 5)

Combine like terms: 7r + -2r = 5r
7 + 5r = 3(r + 5)

Reorder the terms:
7 + 5r = 3(5 + r)
7 + 5r = (5 * 3 + r * 3)
7 + 5r = (15 + 3r)

Solving
7 + 5r = 15 + 3r

Solving for variable 'r'.

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

Add '-3r' to each side of the equation.
7 + 5r + -3r = 15 + 3r + -3r

Combine like terms: 5r + -3r = 2r
7 + 2r = 15 + 3r + -3r

Combine like terms: 3r + -3r = 0
7 + 2r = 15 + 0
7 + 2r = 15

Add '-7' to each side of the equation.
7 + -7 + 2r = 15 + -7

Combine like terms: 7 + -7 = 0
0 + 2r = 15 + -7
2r = 15 + -7

Combine like terms: 15 + -7 = 8
2r = 8

Divide each side by '2'.
r = 4

Simplifying
r = 4

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