Answer:
Paco is not correct.
Step-by-step explanation:
This is the Equation... 2/5x-1=9
If Paco is true, you can substitute x=4 into the equation.
If x = 4, [2/(5*4)]-1=9
Simplifying this would make it 2/20-1=9
which equals -9/10=9.
But we know that -9/10 does not equal 9.
Therefor, Paco's "answer", which is x=4, is not correct.
