2(2r-1)+4=5(r-1)

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Solution for 2(2r-1)+4=5(r-1) equation:


Simplifying
2(2r + -1) + 4 = 5(r + -1)

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

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

Combine like terms: -2 + 4 = 2
2 + 4r = 5(r + -1)

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

Solving
2 + 4r = -5 + 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
2 + 4r + -5r = -5 + 5r + -5r

Combine like terms: 4r + -5r = -1r
2 + -1r = -5 + 5r + -5r

Combine like terms: 5r + -5r = 0
2 + -1r = -5 + 0
2 + -1r = -5

Add '-2' to each side of the equation.
2 + -2 + -1r = -5 + -2

Combine like terms: 2 + -2 = 0
0 + -1r = -5 + -2
-1r = -5 + -2

Combine like terms: -5 + -2 = -7
-1r = -7

Divide each side by '-1'.
r = 7

Simplifying
r = 7

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