Question

Jennifer has 7 red marbles and blues marbles. how many marbles does she have?

Answer 1

Jennifer has 14 marbles

Answer 2

For this case we must find the number of marbles that Jennifer has.

Let T be the variable that determines the number of total marbles that Jennifer has.

Let x be the variable that represents the number of red marbles that Jennifer has. So,
`x = 7`

Let y, the variable that represents the number of marbles blues Jennifer has. So,
`y = 7`

To find the value of T, we must add the variables x and y.

So,
`T = x + y`

`T = x + y`

`T = 7 + 7\\T = 14`

So, Jennifer has 14 marbles.

Answer:

14 marbles