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Maslowich
2 years ago
6

Y=x-5 y=7 solve for x simplify your answer as much as possible

Mathematics
1 answer:
love history [14]2 years ago
5 0

Answer:

x = 12

Step-by-step explanation:

First of all, what you will want to do is plug in your y into the first equation, to find the x.

y = x - 5 ----> 7 = x - 5

Next, think about your possible solutions here.... Flip the equation:

5 + 7 = ? ---> 5 + 7 = 12

Now, plug both your x and y in the original equation:

7 = 12 - 5  Does this match?

7 = 7          Yes!

This is the simplest way I can explain it! I hope it is understandable, correct, and helpful. Have a great day :D

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Jake has decided to invest in three business ventures. The total cost of investing in all three ventures is $15,000. The combine
Arte-miy333 [17]
X = first venture, y = second venture, z = third venture

x + y + z = 15,000
x + z = y + 7000
3x + 2y + 2z = 39,000
these are ur equations.....

x + y + z = 15,000
x - y + z = 7000
--------------------add
2x + 2z = 22,000

x + y + z = 15,000....multiply by -2
3x + 2y + 2z = 39,000
-------------------
-2x - 2y - 2z = - 30,000 (result of multiplying by -2)
3x + 2y + 2z = 39,000
------------------add
x = 9,000

2x + 2z = 22,000
2(9000) + 2z = 22000
18,000 + 2z = 22000
2z = 22000 - 18000
2z = 4000
z = 4000/2
z = 2,000

x + y + z = 15,000
9000 + y + 2000 = 15,000
11,000 + y = 15,000
y = 15,000 - 11,000
y = 4,000

first venture (x) = 9,000 <==
second venture (y) = 4,000 <==
third venture (z) = 2,000 <==
7 0
2 years ago
Read 2 more answers
If f(x) = 5x - 11, find f(-2m + 5)
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3 years ago
How do you do this problem
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3 years ago
Sam rented a truck for one day. There was a base fee of $16.95, and there was an additional charge of 73 cents for each mile dri
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2 years ago
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