Asked by Aubrey

if 10+5y=77 then what is y?
Answered by Ms. Sue
10+5y=77
5y = 77 - 10
5y = 67
y = 67/5
y = ?

Answered by Jen
10+5y=77
Subtract 10 from both sides.
5y=67
Divide both sides by 5.
y=67/5
Answered by Aubrey
what??? i don't get it:(

Answered by Ms. Sue
What part of either Jen's or my explanation don't you get?

Answered by Aubrey
isnt it 13.4?? cause if you do 67/5 you get 13.4
Answered by Ms. Sue
You're right.

67/5 = 13.4

y = 13.4

To prove it, substitute 13.4 for y in the original equation.

Answered by Aubrey
ok thank you
Answered by Ms. Sue
You're welcome.

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