Answer:
add 7 to 9 times k : 7+9k
c cubed minus the product of 5 and q plus 4 : 
twice r plus 7 is equal to 45 minus r : 2r+7=45-r
Product of h and 4 is subtracted from one-fifth of x is 35 :(h*4) - 1/5*x
one third of the difference bewteen 6 and p is added to 8 : (6-p)+8
Just flip your fraction around and your answer will be 10/11
13x−4=−36−27x+12: Distributive property
13x−4=−24−27x: Combine like terms
40x=−20: Addition Property of equality
It would be 1/3rd because your last number would be 4 in the equation of 12 sandwiches.
(3x+1) = 64
3x = 63
3x/3 = 63/3
x = 21