5less than the quotient of a number and -7 is twelve

First, write the problem as an equation.

The quotient of a number and :

less than:

is twelve:

Put it all together now:

Start by adding to both sides of the equation. Our goal is to get on one side of the equal sign and everything else on the other side:

Now multiply both sides by :

This means that the number equals .

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40