He just switched sides of the variables and numbers. Instead if adding the opposite.
60i
if you go to mode on your calculator then Chang it from "real" to "a+bi" you can solve for unreal numbers. if you press "2nd" then "." it makes an "i"
(2x^2-x^2)= x^2
(1+7) = 8
X^2 + 8
Answer:
I dont know uhm i think no sorry if im wrong
Step-by-step explanation:
Let:
100%---------------->24h
30%------------------>xh
Using cross multiplication: