Answer:
21
Step-by-step explanation:
4x and 84 share the same value, so divide 84 by 4 to get the value of x
B because the sum of B is 15 and it is composite because 3*5=15
First question: x= 1 2/3 + y
y= -1 2/3 - x
second question: y= 6 - 7x
x= y + 6/7
Answer:
-45
Step-by-step explanation: