Question

sum of three consecutive multiples of 7 is 777 find these multiples

Answer 1

first consecutive multiple of 7 = x
second                                    = x+7
third                                        = x+14
sum of three consecutive multiple=777
x+x+7+x+14=777
3x+21=777
3x=756
x=756/3
x=252
therefore first consecutive x = 252
                second consecutive x+7=259
                 third  consecutive x+14=266

Answer 2

first number = x
second number = x+14
third =x +21
so x +x +7+x+21
3x +28= 777
3x = 777 -28=699
x = 699/3=233 first =233
second =233 +7 =240
third =233+14=247