X - the number
The algebraic expression:

The solution:
Answer:
2 children
Step-by-step explanation:
I think that there are 2 children in the group because if you divide 568 by 16 you will get 35.5. Multiply 35 by 16 and you get 560. Subtract 16 from 560 you get 544 + 12+12 = 568
Answer:
Y x 2
Step-by-step explanation:
2 x 1 simplified is 2 so 1 will be eliminated
Answer: y= ±3
Explanation: 21/7=3 BUT the absolute sign mean no matter whats inside the sign the outcome will always be positive afterwards , so it can be a positive or negative 3.