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3 years ago

Solve the following system of equations for x 2x-y=4 y-x=4

Mathematics

2 answers:

Dominik [7]3 years ago

6 0

Answer:

x = 8

y = 12

Step-by-step explanation:

Given equations are -

2x - y = 4 .......(1)

-x + y = 4 ........(2)

Add both equations, we get

2x - y + (-x + y) = 4 + 4

⇒2x - y - x + y = 8

⇒x = 8

Now,

Put the value of x in equation (2), we get

y - 8 = 4

⇒y = 4 + 8

⇒y = 12

∴ we get

x = 8

y = 12

Yuliya22 [10]3 years ago

4 0

Answer:

What do i do???

Step-by-step explanation:

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olasank [31]

Answer:

$\frac{34}{15}$

Step-by-step explanation:

we are asked to evaluate

$4\tfrac{1}{4}$ ÷ $1\tfrac{7}{8}$

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