Question

The sum of a number and two is equal to negative seven. Translate this sentence to an equation and then find the number.

Answer 1

Answer: -9

Explanation:

Given

The sum of a number and two is equal to negative 7

Suppose x is that number

`\therefore x+2=-7\\\text{add -2 both sides}\\\Rightarrow x+2-2=-7-2\\\Rightarrow x=-9`

So, the number is
`-9`.