3) a number is chosen at random from 1 to 10. find the probability of selecting a
multiple of 2.
4) a number is chosen at random from 1 to 10. find the probability of selecting a
multiple of 3.

3

Step-by-step explanation:

The whole goal is to isolate the variable.

3x-1=8

1+3x-1=8+1 first add 1 to both sides of the equation to cancel out the -1

3x=9 now just divide 3 to both sides of the equation because the opposite of multiplication is division. So dividing 3 on both sides cancels out the 3 to isolate the x

3x/3=9/3

x=3