Question

the sum of three consecutive multiples of 7 is 357.find the smallest

Answer 1

Let the number be X

X + X + 7 + X + 14 = 357

= 3X = 357 -21

3X = 336

X = 112 Ans.

Answer 2

let the consecutive numbers be

x

x+7

x-7

sum is 357

3x =357

x = 119

numbers are 112 ,119 ,126