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naomicervero
18.09.2019 •
Mathematics
This is a challenging problem ? can someone
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Ответ:
2x = 3y + 5 (1)
x = 2y + 2 (2)
Multiply equation (2) by 2, to get:
2x = 4y + 4 (3)
The right hand sides of equations (1) and (3) are equal, so we can write:
3y + 5 = 4y + 4
which gives y = 1 as the solution.
Plugging y = 1 into equation (2), we find the x = 4.
So the full solution is: x = 4, y = 1.
Ответ:
To calculate the sale price of the coat, we can simply multiply 150 by .40, then subtract the product from 150.
150 × .40 = 60
150 - 60 = 90
The sale price of the coat is $90.