Question

Find the shortest length that can be cut into exactly lengths of 4cm or 7cm or 18cm

Answer 1

its simple really...

4x18=72cm

7x18=126  

18x1=18

divide all by 2

72 = 36

126= 63

18=9

they can all be divided by 3 (or 6 but ur looking for shortest length)  and thats it so...

so the shortest length is 3