Question

can someone help me with number 2?

Answer 1

Answer:

y = 8

x = 5

Step-by-step explanation:

y is 3 more than x

If x = 5

5+3 = y

8 = y

5+8 = 13

Answer 2

Answer:

The solution is (5, 8) - the second option is the correct answer.

Step-by-step explanation:

y = x + 3;  subtracting x from both sides we get the following:

=>y - x = x + 3 - x

=> y - x = 3  .  .  .  .  .  .  .  .  .  .  .  (i)

x + y = 13  .  .  .  .  .  .  .  .  .  .  .  .  (ii)

Adding equation (i) and (ii):

y - x + x + y = 3 + 13

=> 2y = 16

∴ $\frac{2y}{2} = \frac{16}{2}$  [dividing both sides by 2]

=>y = 8

Putting the value of x into equation (ii):

x + 8 = 13

=> x + 8 - 8 = 13 - 8

=> x = 5

Therefore, the solution is (5, 8) - the second option is the correct answer.