PLEAS HELP ME ON THIS FOR A CHANCE TO NEVER MEET ZOE LAGROOMER

PLEAS HELP ME ON THIS FOR A CHANCE TO NEVER MEET ZOE LAGROOMER class=

Answer :

a=4

Step By Step :
7x3 = 21
5+12=17
21 - 17 = 4
Answer: A = 4 is the answer. Hope it helps.

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