Respuesta :
Sum means addition, so sum of 7 and y is (7 + y).
Any number times some other number is basically the multiplication of those two numbers, so,
5 times (sum of 7 and y)
= 5 × (7 + y)
= 5(7 + y)
= 35 + 5y
Any number times some other number is basically the multiplication of those two numbers, so,
5 times (sum of 7 and y)
= 5 × (7 + y)
= 5(7 + y)
= 35 + 5y