Eight times the sum of 5 and a number is less than 56.

30 people weigh 160 pounds or more

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0