Question

Use elimination method to solve the following 2x+5y=4 and 2x-2y=18

Answer 1

Answer:

2x + 5y = 4............(i)

2x - 2y =18.............(ii)

subtracting equation (i) from(ii)

2x - 2y = 4

- 2x + 5y =18

- -

0 -7y = -14

:.-7y = -14

:. y = -14/-7

:. [y = 2]

substituting value of y in eqⁿ.(i)

2x + 5y = 4

:.2x + 5(2) = 4

:.2x +10 = 4

:.2x = 4 -10

:.2x = -6

:. x = -6/2

:. [x = -3]

Step-by-step explanation:

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