Question

x=3 and y= - 1 is the solution for which of the following equation?

(1)x-y =4
(2)2x - 4y =13
(3) 5x + y = 23
(4) x+8y=42 ​

Answer 1

Answer:

it is the solution to option1

Answer 2

(1). 3+1=4

4=4

= 1

(2). 2×3-4×-1=13

6-4=13

2=13

= 13/2

(3). 5×3-1=23

15-1=23

14=23

= 23/14

(4). 3+8×-1=42

11=42

= 42/11