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

 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

Good evening ,

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.

:)

idn

step-by-step explanation:

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!