Question

answer these questions please.

Answer 1

I hope it helps you.

Answer 2

1/X + 1/3 = 1
=>(1×3+1×X) / 3X = 1
=>3+X / 3X = 1
=>3 + X =1 × 3X
=> 3 + X =3X
=>3 = 3X-- X
=>3=2X
=>3 / 2 = X