Subtract 4 from both sides, y = 5
Answer:
14. 12x + 2y
16. -2x - 4y
18. -8x + 10y
Step-by-step explanation:
<h3><u>
Don't stress it.</u></h3>
All you need to do is add the x's with the x's and add the y's with the y's.
The same applies with subtraction.
<u><em>Note: </em></u>
positive + positive = positive
negative - negative = negative
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Wait, we are dividing 8 by 3/5?
I have to assume that someone goes into the store and buys 3 pens for $1.50, 8 for $4 and 12 for $6. This is a bit confusing until you verify that the unit cost per pen is the same in all three cases.
3 pens for $1.50 comes out to $0.50 per pen;
8 pens for $4 comes out to $0.50 per pen; and
12 pens for $6 comes out to $0.50 per pen.
Summarizing: c = ($0.50)p
The answer would be 60. This is because 480/8=60.