Question

monica has some cookies. she gave seven to her sister. then, she divided the remainder into two halfway, and she still had five cookies left. writing equations using symbols

Answer 1

Answer:
`\bold{(x-7)/(2)=5\qquad \rightarrow \qquad x = 17}`

Explanation:

Monica has some cookies: x

She gave seven to her sister: x - 7

Then she divided the remainder into 2:
`(x-7)/(2)`

She still had five cookies left:
`(x-7)/(2)=5`

To solve, multiply both sides by 2, then add 7 to both sides.

`(x-7)/(2)(2)=5(2)\qquad \rightarrow \qquad x - 7 = 10`

`x - 7 = 10\qquad \rightarrow \qquad x = 17`