Question

2x + 6y = -2 -x + 2y = 6 By elimination method

Answer 1

Good evening ,

Answer:

the solution couple is (-4,1)

Step-by-step explanation:

2x + 6y = -2 (1)

-x + 2y = 6 (2)

(1) - 3×(2) ⇒ (2x+6y) - 3×(-x+2y) = -2 - 3×6

              ⇒ 5x = -20

              ⇒ x = -4

therfore (1) ⇒ 4 + 2y = 6 ⇒ 2y = 2 ⇒ y=1.

:)

Answer 2

Answer:

 x = -4 ;  y = 1

Step-by-step explanation:

2x + 6y = -2   --------(i)

-x + 2y = 6     --------(ii)

            2x + 6y = -2

(ii)*2     -2x + 4y = 12

add;              10y = 10

                        y = 10/10

                       y = 1

Substitute y in (i)

2x + 6*1 = -2

2x +6= -2

2x = -2-6

2x = -8

x = -8/2

x = -4