3/9 + 3/9 = 6/9
We know that 6/9 can still be simplifed.
So 6/9 will be divided by three.
= 2/3 is the answer.
Answer:
18 cm
Step-by-step explanation:
Fraction of girls = 1 - 3/7 = 4/7
4/7 is equivalent to 72 girls
1/7 .. .. ............. 72 / 4 = 18
Total number of children = 7/7 = 18*7 = 126 Answer