Answer:36
Step-by-step explanation:

for every 7 students there are 4 girls, so for every 84 there must be 48
7*12=84
4*12=48
so, in all 84 students there are 48 girls
so amount of boys=84-48=36
there are 36 boys
Answer:
no se pregúntale a otro gracias cuidate mucho:)
Hello :
14 = 2×7
21 = 3×7
<span> the least common denominator for the fractions 9/14and 2\21 is : 6×7=42</span>
i don't really get the part after the (-4,-6) , what did u write there
Answer:

Step-by-step explanation:
Multiply across.

Then Simplify.
