Câu hỏi
to) (8)/(7)-(5)/(12)= 1(7)/(10)-(14)/(3)=
Giải pháp
4.3
(227 Phiếu)
Quân Huy
chuyên gia · Hướng dẫn 6 năm
Trả lời
To solve these problems, we need to perform the subtraction of fractions and mixed numbers.1.
First, find a common denominator for the fractions. The least common multiple (LCM) of 7 and 12 is 84.Convert each fraction to have the common denominator of 84:
Now subtract the fractions:
So,
.2.
First, convert the mixed number to an improper fraction:
Next, find a common denominator for. The LCM of 10 and 3 is each fraction to have the common denominator of 30:
Now subtract the fractions:
So,
.