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Alona [7]
3 years ago
10

Solve each system by substitution. y = 2x + 5 3x - y= -6

Mathematics
1 answer:
castortr0y [4]3 years ago
7 0
X=-1 and y=3

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

x - 5 = -6

Add 5 to both sides

x=-1

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
y=3

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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You start by looking at what number can divide evenly into both 16 and 48. Both numbers are divisible by 16. 16 goes into 16 once and 16 goes into 48 three times. So you divide each term by 16 and your expression should look like this: 16 (p+3)
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Answer:

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Step-by-step explanation:

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2) Now, you have to find the like terms and add them together

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Hope this helps!

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6 0
3 years ago
28 Marks
OLga [1]

Answer:

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8 0
3 years ago
Geometry help please!
photoshop1234 [79]

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