8х + 4 y = 16
7y = 15 – x

x=1      y=2

Step-by-step explanation:

x=1     y=2

8x +4 y=16

8(1) + 4(2)=16

8+8=16

this is correct so now lets check the other one

7y=15-x

7(2)=15-(1)

14=14

this is also correct

15% chance.

step-by-step explanation:

3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.