What is x? 5x - 7 + 3x - 10 = -2x - 5 + 7x - 13

x = -1/3

Step-by-step explanation:

5x - 7 + 3x - 10 = -2x - 5 + 7x - 13 add all like terms

8x-17=5x-18 put all variables on the left and the others on the right and symplify

3x = -1 divide

3x/3 and -1/3 equals x = -1/3

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