Question

The sum for three numbers is 57 the second number is 2x the first the third number is 18 less than the second what is the third number

Answer 1

Step-by-step explanation and answer:

consider the numbers x,y,z

X+y+z=57

2x=y-6

y=10+z

y=2x+6

z=y-10

=2x+6-10

z=2x-4

x+y+z=57

x+2x+6+2x-4=57

5x+2=57

5x=55

x=11

y=27

z=18