Question

Which pair of values is the solution of equations 3x + 4y = 31 and 2x + y = 9?​

Answer 1

Step-by-step explanation:

3x+4y=31

Let x= 1

Then, y=?

Now, putting the values

=>3×1+4y=31

=>3+4y=31

=>4y=31 -3

=>y=28/4

=>y=7

So, x=1 and y=7.

2x+y=9

Let x= 1

Then, y=?

Now, putting the values

=>2×1+y=9

=>2+y=9

=>y=9-2

=>y=7

So, x=1 and y=7.