Answer:
17
Step-by-step explanation:
1+7p-40=80
-39+7p=80 Move constant to the right
7p=80+39 add the numbers
7p=119 divide both sides by 7
42j^4k^2/(-3j^3k)
42/-3 * j^4/j^3 *k^2/k
-14 *j *k
z= -3
Step-by-step explanation