Question

Simultaneous Equations
Solve:
x+2y=-4
2x+5y=1

Show Working.
Answer Should be appropriate.

Answer 1

(x, y) = (-22, 9)

_________________

x + 2y = -4 |x2| 2x + 4y = -8

2x + 5y = 1 |x1| 2x + 5y = 1

Elimination x

2x + 4y = -8

2x + 5y = 1

__________-

-y = -9

y = 9

Substitution y

x + 2y = -4

x + 2(9) = -4

x + 18 = -4

x = -4 - 18

x = - 22

= (x, y)

= (-22, 9)

@11177420

Answer 2

(-22, 9)

Step-by-step explanation:

Simultaneous Equations

Solve:

x+2y=-4

2x+5y=1

Show Working.

Answer Should be appropriate.