Question

[tran quynh chi]

tính bằng 2 cách

3/4:2/3+1/4:2/3

c1

c2

{2,07+2,13} :0,15

c1

c2

làm chi tiết hộ mik nhé

Answer 1

[_Never Give Up_ĐXRBBNBMCSNVCNĐTĐ_]

biểu thức 1:

\(c1:\frac{3}{4}:\frac{2}{3}+\frac{1}{4}:\frac{2}{3}=\left(\frac{3}{4}+\frac{1}{4}\right):\frac{2}{3}=1:\frac{2}{3}=\frac{3}{2}\)

\(c2=\frac{3}{4}:\frac{2}{3}+\frac{1}{4}:\frac{2}{3}=\frac{9}{8}+\frac{3}{8}=\frac{3}{2}\)

biểu thức 2:

\(c1:\left(2,07+2,13\right):0,15=4,2:0,15=28\)

\(c2:\left(2,07+2,13\right):0,15=2,07:0,15+2,13:0,15=13,8+14,2=28\)

Answer 2

[Lê Nguyễn Hằng]

C1:\(=\frac{3}{4}x\frac{3}{2}+\frac{1}{4}x\frac{3}{2}\)

\(=\frac{9}{8}+\frac{3}{8}\)

\(=\frac{12}{8}\)

\(=\frac{3}{2}\)

C2:\(=\left(\frac{3}{4}+\frac{1}{4}\right)x\frac{3}{2}\)

\(=1x\frac{3}{2}\)

\(=\frac{3}{2}\)

\(x=\)nhân nha bn!