3 years ago

X-y = -10 2x+4y=22 substitution

Mathematics

1 answer:

Tema [17]3 years ago

4 0

Answer:

[1] x - 4y = 22

[2] 2x + 5y = -21

Step-by-step explanation:

Solve equation [1] for the variable x

[1] x = 4y + 22

// Plug this in for variable x in equation [2]

[2] 2•(4y+22) + 5y = -21

[2] 13y = -65

// Solve equation [2] for the variable y

[2] 13y = - 65

[2] y = - 5

// By now we know this much :

x = 4y+22

y = -5

// Use the y value to solve for x

x = 4(-5)+22 = 2

I am sorry if I get it wrong.

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