What is the value of r in: 1/7(105+r)=20

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asked Aug 2, 2018 159k views

1 Answer

Cookster · Answer 1 · 2018-08-07T01:31:03+0000

Use the distributive property.

1/7(105 + r) = 20
15 + (1/7)r = 20

Then subtract each side of the equation by 15.

15 + (1/7)r = 20
(1/7)r = 5

Divide both sides by 1/7.

(1/7)r = 5

r = 35

So, the answer to this question is r is equal to 35.

What is the value of r in: 1/7(105+r)=20

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