\(1\frac{5}{7}\cdot\frac{3}{4}=\frac{12}{7}\cdot\frac{3}{4}=\frac{9}{7}\)

\(\frac{10}{11}:1\frac{1}{3}=\frac{10}{11}:\frac{4}{3}=\frac{15}{22}\)

\(3,57\cdot4,1+2,43\cdot4,1=(3,57+2,43)\cdot4,1\)

                                           \(=6\cdot4,1=24,6\)

Cuối tự làm 

~Chúc bn học tốt~

\(1\frac{5}{7}x\frac{3}{4}=\frac{12}{7}x\frac{3}{4}=\frac{9}{7}\)

\(\frac{10}{11}:1\frac{1}{3}=\frac{10}{11}:\frac{4}{3}=\frac{10}{11}x\frac{3}{4}=\frac{30}{44}=\frac{15}{22}\)

\(3,57x4,1+2,43x4,1=4,1x\left(3,57+2,43\right)=4,1x6=24,6\)

\(3,42:0,57x8,4-6,8=6x8,4-6,8=50,4-6,8=43,6\)

minh cam on 2 ban nhiu nha co j ket ban voi minh nha

3.42:0.57=6x8.4=50.4-6.8=43,6

3,42 : 0,57 x 8,4 - 6,8
=6 x 8,4 - 6,8
=50,4 - 6,8
43,6

k mik với

\(3,42:0,57\times8,4-6,8\)

\(=3,42\times\frac{100}{57}\times8,4-6,8\)

\(=6\times8,4-6,8\)

\(=50,4-6,8\)

\(=43,6\)

A=0; B=4

A=0; 

a) 3/5x7/9+11/9x3/5

=3/5 x(7/9+11/9)

= 3/5x2

=6/5

b)14/13:1/2+3/13x2-2x7/13

= 14/13 x 2 +3/13 x2 - 2x7/13

=2 x (14/13 +3/13 -7/13)

= 2 x 10/13

= 20/13

a) 3/5 x 7/9 + 11/9 x 3/5 - 3/10

=  3/5 x 7/9 + 11/9 x 3/5 - 3/5 x 2

=  3/5 x ( 7/9 + 11/9 - 2 )

=  3/5 x 0

=  0

b) 14/13 : 1/2 + 3/13 x 2 - 2 x 7/13

=  14/13 x 2/1 + 3/13 x 2 - 2 x 7/13

=  ( 14/13 + 3/13 - 7/13 ) x 2

=  10/13 x 2 = 20/13

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