9514 1404 393
Answer:
see attached
Step-by-step explanation:
The sum is formed by adding corresponding elements. For example, the lower right element (row 3, col 3) of the sum is 5+4 = 9
3a+6b=4
-3a both sides
6b=4-3a
÷6 both sides
b=2/3 -1/2 a
4,767
He got scammed for paying $2.50 for a Juice box
