09-09-2015
Mathematics

contestada

I don't understand 6y-(2y-5) = 29

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SchwarzschildRadius SchwarzschildRadius

09-09-2015

So,

6y - (2y - 5) = 29

Distribute.
6y - 2y + 5 = 29

Collect Like Terms.
4y + 5 = 29

Subtract 5 from both sides.
4y = 24

Divide both sides by 4.
y = 6

Check.
6(6) - (2(6) - 5) = 29
6(6) - (12 - 5) = 29
6(6) - (7) = 29
6(6) - 7 = 29
36 - 7 = 29
29 = 29 This checks.

S = {6}

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