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

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


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

Reorder the terms:
2(-1 + 2r) + 5 = 3(r + 7)
(-1 * 2 + 2r * 2) + 5 = 3(r + 7)
(-2 + 4r) + 5 = 3(r + 7)

Reorder the terms:
-2 + 5 + 4r = 3(r + 7)

Combine like terms: -2 + 5 = 3
3 + 4r = 3(r + 7)

Reorder the terms:
3 + 4r = 3(7 + r)
3 + 4r = (7 * 3 + r * 3)
3 + 4r = (21 + 3r)

Solving
3 + 4r = 21 + 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.
3 + 4r + -3r = 21 + 3r + -3r

Combine like terms: 4r + -3r = 1r
3 + 1r = 21 + 3r + -3r

Combine like terms: 3r + -3r = 0
3 + 1r = 21 + 0
3 + 1r = 21

Add '-3' to each side of the equation.
3 + -3 + 1r = 21 + -3

Combine like terms: 3 + -3 = 0
0 + 1r = 21 + -3
1r = 21 + -3

Combine like terms: 21 + -3 = 18
1r = 18

Divide each side by '1'.
r = 18

Simplifying
r = 18

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