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meriva
3 years ago
10

How do u solve 1×-2y=4 -1×+10y=8

Mathematics
1 answer:
Molodets [167]3 years ago
6 0

Answer: x = -8 ; y = -6

Step-by-step explanation:

1*x-2*y=4

1*x = 4 + 2*y

x = 4 + 2*y

Now you replace the value of x on the following equation:

-1*x+10*y=8

-1*(4 + 2*y) = 8

-4 - 2*y = 8

-2*y = 8+4

-2*y = 12

y = -12/2

y = -6

You replace the value of y in the previous equation:

x = 4 + 2*y

x = 4 + 2*(-6)

x = 4 - 12

x = -8

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viva [34]

Answer:

30%

Step-by-step explanation:

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3 0
3 years ago
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Answer:

Step-by-step explanation:

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8 0
4 years ago
If a new jacket sells for $30, find the total cost if you were charged 5% sales tax. Round your answer to the nearest cent.
Nady [450]
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6 0
3 years ago
6x + 3 = 2x + 8<br> Whats the answer
Elden [556K]

Answer:

4/5

Step-by-step explanation:

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4 years ago
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3 years ago
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