2r+2(r+5)=70

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Solution for 2r+2(r+5)=70 equation:


Simplifying
2r + 2(r + 5) = 70

Reorder the terms:
2r + 2(5 + r) = 70
2r + (5 * 2 + r * 2) = 70
2r + (10 + 2r) = 70

Reorder the terms:
10 + 2r + 2r = 70

Combine like terms: 2r + 2r = 4r
10 + 4r = 70

Solving
10 + 4r = 70

Solving for variable 'r'.

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

Add '-10' to each side of the equation.
10 + -10 + 4r = 70 + -10

Combine like terms: 10 + -10 = 0
0 + 4r = 70 + -10
4r = 70 + -10

Combine like terms: 70 + -10 = 60
4r = 60

Divide each side by '4'.
r = 15

Simplifying
r = 15

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