Question

The number 6 is halfway between 4.5 and 7.5.
Answer the missing numbers below.

The number 6 is halfway between 2.8 and .......
The number 6 is halfway between -12 and .......

Answer 1

$6=\frac{2.8+x}{2}\\ 12=2.8+x\\ x=9.2\\ \\ \\ 6=\frac{-12+x}{2}\\ 12=-12+x\\ x=24$