You are making necklaces for your friends. you have 72 blue beads and 42 red beads. each friend will recieve a identical necklace, and all beads must be used

6

Step-by-step explanation: Because, 6 is the highest number you can multiply both with, 6x12 = 72 and 6x7 = 42

72 and 42 are both divisible by 6

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.