Answer:
Third number = 69
Explanation:
Let x represent the first number
Let 2x+4 represent the second number
Let 3x represent the third number
x + 2x + 4 + 3x = 142
6x + 4 = 142
Subtract 4 from both sides of the equation
6x + 4 - 4 = 142- 4
6x = 138
Divide both sides of equation by 6
x = 23
First number = 23
Second number = 2(23) + 4
=50
Third number = 3( 23)
= 69
Which means the third number is the largest.