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

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


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

Reorder the terms:
-2 + 5(5 + r) = 2(1 + -1r)
-2 + (5 * 5 + r * 5) = 2(1 + -1r)
-2 + (25 + 5r) = 2(1 + -1r)

Combine like terms: -2 + 25 = 23
23 + 5r = 2(1 + -1r)
23 + 5r = (1 * 2 + -1r * 2)
23 + 5r = (2 + -2r)

Solving
23 + 5r = 2 + -2r

Solving for variable 'r'.

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

Add '2r' to each side of the equation.
23 + 5r + 2r = 2 + -2r + 2r

Combine like terms: 5r + 2r = 7r
23 + 7r = 2 + -2r + 2r

Combine like terms: -2r + 2r = 0
23 + 7r = 2 + 0
23 + 7r = 2

Add '-23' to each side of the equation.
23 + -23 + 7r = 2 + -23

Combine like terms: 23 + -23 = 0
0 + 7r = 2 + -23
7r = 2 + -23

Combine like terms: 2 + -23 = -21
7r = -21

Divide each side by '7'.
r = -3

Simplifying
r = -3

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