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pochemuha
4 years ago
9

A student concluded that the solution to the

Mathematics
1 answer:
Nesterboy [21]4 years ago
5 0
<h3>Answer:</h3>

isr=-2. No, i dont agree the student forgot the negative and forgot to dicide the 2 so that the x is by its self.

<h3>Steps:</h3>

first you have to get the 2x by its self.

2x+1+3=0

-1. -1

-3. -3

2×=-4

÷2 ÷2

<h2 />
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To solve this, because y is equal to 2x+5, you can substitute 2x+5 into the bottom equation for y.

You now have 3x - (2x + 5) =-6

This can be solved like a normal equation. Multiply each term in the parenthesis by -1.

3x - 2x - 5 = -6

Subtract 2x from 3x

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Now you can solve for y by plugging -1 in for x in either equation. Im going to use the top one.

y= 2(-1)+5
y= -2+5
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You can check your answer by plugging in the values for x and y into both equations and making sure both sides equal each other.
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