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3 years ago

5y - 4x = -7 2y + 4z = 14 Solve for x and y

Mathematics

2 answers:

castortr0y [4]3 years ago

8 0

Answer:

et's solve for x.

5y−4x=−72y+4z

Step 1: Add -5y to both sides.

−4x+5y+−5y=−72y+4z+−5y

−4x=−77y+4z

Step 2: Divide both sides by -4.

−4x

−4

−77y+4z

−4

y−z

Answer:

y−z

Let's solve for y.

5y−4x=−72y+4z

Step 1: Add 72y to both sides.

−4x+5y+72y=−72y+4z+72y

−4x+77y=4z

Step 2: Add 4x to both sides.

−4x+77y+4x=4z+4x

77y=4x+4z

Step 3: Divide both sides by 77.

77y

4x+4z

Answer:

Step-by-step explanation:

I think that can help :) wanna chat add me as friend

Marysya12 [62]3 years ago

3 0

Answer:

1.)x=5/4y+7/4

2.) y=−2z+7

Step-by-step explanation:

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Answer:

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Explanation:

We are given that the quotient of x and -1.5 is 21

This means that:

$\frac{x}{-1.5} =21$

To get the value of x, we will multiply both sides of the equation by -1.5

This means that:

$\frac{x}{-1.5} * -1.5=21*-1.5$

x = -31.5

Note that the value of x must be negative because we are dividing by a negative number and the quotient is positive (-ve/-ve is +ve and +ve/-ve is -ve)

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Vsevolod [243]

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Option D is the correct answer.

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Tcecarenko [31]

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Step-by-step explanation:

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Step-by-step explanation:

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