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notsponge [240]
3 years ago
14

What is 3x9x-5x=7#hh&

Mathematics
1 answer:
Paha777 [63]3 years ago
7 0

move the 3 to the 7 side. it will become negative.

9x-5x=7-3

4x=4

x=1

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How to set the answer up
Korolek [52]

Let s and g represents the numbers of suits and gowns produced.

The number of zippers used is 2s+g.

The number of buttons used is 5s+8g.

In order to use all of the available zippers and buttons, we must have ...

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Cramer's rule tells you the solution to the system

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Using this rule on the equations for zippers and buttons, we have

... s = (1·576 -8·171)/(1·5 -8·2) = -792/-11 = 72

... g = (171·5 -2·576)/-11 = -297/-11 = 27

72 suits and 27 gowns can be made from available zippers and buttons.

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