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Rashid [163]
3 years ago
13

Each notebook in a store costs $7

Mathematics
1 answer:
gogolik [260]3 years ago
6 0
7x + 2y = 27

I can't read what the variables are in the picture, so I used x and y. But replace the variable 'x' with whatever the question says to use for notebooks, and change y to be whatever it says for the second thing in the store.

What my equation means is that an unknown number of notebooks, which is 7$ each, plus the other thing, which is $2 each, comes to a sum of $27.
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X + y = 6
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Subtract the equations, you get:

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