Simplify -3/5x+1/2x and explain how you got it

-(1/10)x

Step-by-step explanation:

This is an addition problem.  Since the variable (x) is the same in both terms, we need only sum up the coefficients -3/5 and 1/2 and then multiply x by this sum.

-3/5x+1/2x = (-3/5 + 1/2)x

The LCD of -3/5 and 1/2 is 10.  The -3/5 term converts to -6/10 and the 1/2 term to 5/10.  Thus, we have (-6/10 + 5/10)x = -(1/10)x

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

360/29

step-by-step explanation: