tổng 2 phân số là :
\(\frac{7}{8}\) X 2 = \(\frac{7}{4}\)
Tổng của phân số thứ nhất và 3 lần phân số thứ hai là :
\(\frac{17}{8}\)X 2 = \(\frac{17}{4}\)
phân số thứ hai là:
(\(\frac{17}{4}-\frac{7}{4}\)) X 2 = \(\frac{5}{4}\)
Phân số thứ nhất là :
\(\frac{7}{4}-\frac{5}{4}=\frac{2}{4}\)
Đáp số : \(\frac{5}{4}\)và \(\frac{2}{4}\)
Tổng 2 phân số
7/8x2=7/4
Nếu gấp phân số thứ nhất lên 3 lần thì được phân số mới
Tổng của phân số mới với phân số thứ 2 là
17/8x2=17/4
Tổng mới hơn tổng cũ là
17/4-7/4=10/4
Trong 1 tổng nếu 1 số hạng gấp lên n lần thì tổng mới tăng thêm n-1 lần số hạng được tăng => Tổng mới đã tăng so với tổng cũ 3-1=2 lần phân số thứ nhất
Phân số thứ nhất là
10/4:2=5/4
Phân số thứ 2 là
7/4-5/4=1/2
nay ban pham hoang anh sao ban lai noi ban anh minh nhu vay the la khong hay dau
1/2 đúng rồi nhưng sao Phạm Hoàng Anh lại chửi bạn?????
đáp án của tớ là 1/2
tớ nghĩ bài của Vũ Thùy Ngọc Linh sai bét
Câu trả lời của mình là 3/4 mình vừa làm đúng luôn
trong violympic mink làm 1/2 đúng đấy !
1/2 đấy mình thử rồi!
mình k cho Usagi.
trần thị ái ngu quá 1/2 là đúng đấy con si
\(\frac{5}{4}\)nha bn
...................
k nha
1/2
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