Solve the equation for x.

Question

30x+10x=40=16x+8

Answer 1

strange way to write an equation!
i) 30x+10x=40 => 40x=40 => x=40/40; x=1
ii) 16x+8=40 => 16x=40-8 => x=32/16; x=2
...perhaps

Answer 2

check for typos. I suspect one of the "=" is a "+"