<span>n Billy's class, 75% of his classmates had brown hair. 18 of his classmates had brown hair. What's the total number of students in his class?</span>
30-f+8f=30
30+7f=30
Move +30 to the right side. Sign changes from +30 to -30.
30-30+7f=30-30
7f=0
Divde by 7
7f/7=0/7
Cross out 7 and 7, divide by 7. Becomes 1*1*f=f
f=0
Answer: f=0
Answer:
the answer is d
Step-by-step explanation:
Just multiply and divide