A piano has 88 keys. A piano repair shop has 4 broken pianos in the shop, some keys went missing. How many piano keys are in the shop? Write and solve and inequality to answer the question

the answer is 22

Step-by-step explanation:

if there are 4 pianos in the shop but

we don't know how many keys are missing

then we will make and equation to solve how many are missing:

88 = x · 4

you divide 88 by 4

and that equals

22