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Setler79 [48]
3 years ago
13

What is the solution to this system of equations? Y= 2x - 3.5 x - 2y = -14

Mathematics
2 answers:
Rudiy273 years ago
8 0

Answer:

x = 7, y = 10.5.

Step-by-step explanation:

y = 2x - 3.5

-2y = -x - 14

Multiply the first equation by 2:

2y = 4x - 7  

Now add this equation  to the second one:

0 = 3x - 21

3x = 21

x = 7.

Now substitute x = 7 in the first equation to fund the value of y:

y = 2(7) - 3.5

y = 10.5.

goldfiish [28.3K]3 years ago
6 0

Answer:

x=7

y=10.5


Step-by-step explanation:

1. You can apply the method of substitution, as you can see below:

- Substitute y=2x-3.5 into the other equation and solve fo x:

x-2(2x-3.5)=-14\\x-4x+7=-14\\x=7

- Substitute the value of x obtain into the first equation, then the value of y is:

y=2(7)-3.5\\y=10.5


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