Question

Pls help if you know how to answer it​

Answer 1

Explanation:

2x+y=7

2×3+y=7

6+y=7

y=7-6

y=1

Answer 2

a = 1

Explanation:

Adding 3 as x into the equation will give you 2(3) + y = 7. 3 x 2 = 6, so now the equation is 6 + y = 7.

Now subtract 6 from both sides of the equation to get y by itself, so you'll have y = 1.

CHECK:

2(3) + 1 = 7

6 + 1 = 7

7 = 7 ⇆