Question

A number is 7 less than 5 times a second number , their sum is 155 , if x represent the second nuber

Answer 1

Hi Friend !!!

Here is ur answer !!!

let the number be y

second number = x

x+y = 155

y = 155-x

y + 7 = 5x

155-x+7 = 5x

162 = 6x

x = 162/6

x = 27

First number = y = 155-x = 155-27

= 128

Hope it helps u :-)

Answer 2

Let Second number be X.



First number = 5X - 7.





Sum of two numbers = 155



First number + Second number = 155



X + 5X - 7 = 155



6X = 162


X = 27.



Second number = X = 27


and,


First number = 5X - 7 = ( 5 × 27 -7 ) = 128.