Question

Đã trả lời bởi chuyên gia

Answer 1

$A, 5 \times x = 25 \times 2 x = 25 \times 2 : 5 x = 10 B, \frac{5}{x} = \frac{3}{8} - \frac{2}{7} \frac{5}{x} = \frac{5}{56} x = 56 C, x \times \frac{4}{3} + x \times \frac{3}{4} = 5 x \times (\frac{4}{3} + \frac{3}{4}) = 5 x \times \frac{25}{12} = 5 x = \frac{12}{5}$ ..

...Xem thêm

Answer 2

$A, 5 \times x = 25 \times 2 x = 25 \times 2 : 5 x = 10 B, \frac{5}{x} = \frac{3}{8} - \frac{2}{7} \frac{5}{x} = \frac{5}{56} x = 56 C, x \times \frac{4}{3} + x \times \frac{3}{4} = 5 x \times (\frac{4}{3} + \frac{3}{4}) = 5 x \times \frac{25}{12} = 5 x = \frac{12}{5}$ ..

Answer 3

A. $x + x + x + x + x = 25 \times 2$

$\Rightarrow 5 x = 50 \Rightarrow x = 50 : 5 \Rightarrow x = 10 B . \frac{5}{x} + \frac{2}{7} = \frac{3}{8} \Rightarrow \frac{5}{x} = \frac{3}{8} - \frac{2}{7} \Rightarrow \frac{5}{x} = \frac{21}{56} - \frac{16}{56} \Rightarrow \frac{5}{x} = \frac{5}{56} \Rightarrow x = 56 C . x : \frac{3}{4} + x \times \frac{3}{4} = 5 \Rightarrow x \times \frac{4}{3} + x \times \frac{3}{4} = 5 \Rightarrow x \times (\frac{4}{3} + \frac{3}{4}) = 5 \Rightarrow x \times (\frac{16}{12} + \frac{9}{12}) = 5 \Rightarrow x \times \frac{25}{12} = 5 \Rightarrow x = 5 : \frac{25}{12} \Rightarrow x = 5 \times \frac{12}{25} \Rightarrow x = \frac{12}{5} D . x \times \frac{1}{5} + x : \frac{5}{4} = 5 \Rightarrow x \times \frac{1}{5} + x \times \frac{4}{5} = 5 \Rightarrow x \times (\frac{1}{5} + \frac{4}{5}) = 5 \Rightarrow x \times 1 = 5 \Rightarrow x = 5$

...Xem thêm

Answer 4

A. $x + x + x + x + x = 25 \times 2$

$\Rightarrow 5 x = 50 \Rightarrow x = 50 : 5 \Rightarrow x = 10 B . \frac{5}{x} + \frac{2}{7} = \frac{3}{8} \Rightarrow \frac{5}{x} = \frac{3}{8} - \frac{2}{7} \Rightarrow \frac{5}{x} = \frac{21}{56} - \frac{16}{56} \Rightarrow \frac{5}{x} = \frac{5}{56} \Rightarrow x = 56 C . x : \frac{3}{4} + x \times \frac{3}{4} = 5 \Rightarrow x \times \frac{4}{3} + x \times \frac{3}{4} = 5 \Rightarrow x \times (\frac{4}{3} + \frac{3}{4}) = 5 \Rightarrow x \times (\frac{16}{12} + \frac{9}{12}) = 5 \Rightarrow x \times \frac{25}{12} = 5 \Rightarrow x = 5 : \frac{25}{12} \Rightarrow x = 5 \times \frac{12}{25} \Rightarrow x = \frac{12}{5} D . x \times \frac{1}{5} + x : \frac{5}{4} = 5 \Rightarrow x \times \frac{1}{5} + x \times \frac{4}{5} = 5 \Rightarrow x \times (\frac{1}{5} + \frac{4}{5}) = 5 \Rightarrow x \times 1 = 5 \Rightarrow x = 5$

Answer 5

¼ tạ bằng nào nhiêu

3 câu trả lời 261

Câu hỏi hot cùng chủ đề

Bài viết mới nhất Lớp 4