Question

value of x for 2x-y = 10,
5x + 2 y = 7 is -
?​

Answer 1

Answer:

{x,y} = {3,4}

Step-by-step explanation:

// Solve equation [1] for the variable y

[1] y = -2x + 10

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

[2] 5x - 2•(-2x+10) = 7

[2] 9x = 27

// Solve equation [2] for the variable x

[2] 9x = 27

[2] x = 3

// By now we know this much :

x = 3

y = -2x+10

// Use the x value to solve for y

y = -2(3)+10 = 4

Solution :

{x,y} = {3,4}

Answer 2

Answer:

Step-by-step explanation:

x=3

y=−4