Solve for x! 7/9x = 42 show your work! i will give ! you so much

I'm assuming you meant (7/9)x = 42.

If that's correct, then we can quickly and easily solve for x by multiplying both sides of this equation by 9/7:

(9/7)(7/9)x = (9/7)(42) = 54.      x = 54

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