Question

-2/5x-9<9/10 ?

/= they are fraction bars

Answer 1

add 9 to each side
\[(-2\div5)x<99\div10\]

Answer 2

then multiply both sides by 5, and divide by -2 to get x alone!
but remember that when you multiply or divide by a negative, you have to flip the inequality :-D

Answer 3

if you need more detail, let me know

Answer 4

otherwise, post your solution and I will tell you if it's right