One number is 5 times a first number. a third number is 100 more than the first number. if the sum of the three numbers is 492, find the numbers.

The numbers are 56, 280 and 156

Step-by-step explanation:

Let

x > the first number

y > the second number

z > the third number

we know that

y=5x > equation A

z=x+100 > equation B

x+y+z=492 > equation C

Solve the system of equations by substitution

substitute equation B and equation A in equation C and solve for x

x+5x+x+100=492

7x=492-100

7x=392

x=56

Find the value of y

y=5x > y=5(56)=280

Find the value of z

z=x+100 > z=56+100=156

therefore

The numbers are 56, 280 and 156

you can't solve x because it is 2 linear equation and you only have one equation

what is the your question?