5(r-13)+2(r-25)=11

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Solution for 5(r-13)+2(r-25)=11 equation:


Simplifying
5(r + -13) + 2(r + -25) = 11

Reorder the terms:
5(-13 + r) + 2(r + -25) = 11
(-13 * 5 + r * 5) + 2(r + -25) = 11
(-65 + 5r) + 2(r + -25) = 11

Reorder the terms:
-65 + 5r + 2(-25 + r) = 11
-65 + 5r + (-25 * 2 + r * 2) = 11
-65 + 5r + (-50 + 2r) = 11

Reorder the terms:
-65 + -50 + 5r + 2r = 11

Combine like terms: -65 + -50 = -115
-115 + 5r + 2r = 11

Combine like terms: 5r + 2r = 7r
-115 + 7r = 11

Solving
-115 + 7r = 11

Solving for variable 'r'.

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

Add '115' to each side of the equation.
-115 + 115 + 7r = 11 + 115

Combine like terms: -115 + 115 = 0
0 + 7r = 11 + 115
7r = 11 + 115

Combine like terms: 11 + 115 = 126
7r = 126

Divide each side by '7'.
r = 18

Simplifying
r = 18

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