600 x 0,14 = 6 x 100 x 0,14=6 x 14= 84

600x0.14=84

600 x 0,14 = 6 x(100x0,14) =6 x 14 = 84

\(\frac{4}{7}:\frac{1}{0,14}+68\%\)

\(=\frac{4}{7}:\frac{100}{14}+\frac{68}{100}=\frac{4}{7}:\frac{50}{7}+\frac{17}{25}\)

\(=\frac{4}{7}\cdot\frac{14}{100}+\frac{68}{100}=\frac{4\cdot14}{7\cdot100}+\frac{17}{25}\)

\(=\frac{1\cdot2}{1\cdot25}+\frac{17}{25}=\frac{2}{25}+\frac{17}{25}\)

\(=\frac{2+17}{25}=\frac{19}{25}\)

\(E=\frac{4}{7}:\frac{1}{0,14}+68\%\)

\(E=\frac{4}{7}:\frac{1}{\frac{7}{50}}+\frac{17}{25}\)

\(E=\frac{4}{7}+\frac{50}{7}+\frac{17}{25}\)

\(E=\frac{57}{7}+\frac{17}{25}=\frac{404}{35}\)

E = \(\frac{4}{7}:\frac{1}{0,14}+68\%\)

E = \(\frac{4}{7}:\frac{50}{7}+\frac{17}{25}\)

E = \(\frac{2}{25}+\frac{17}{25}\)

E = \(\frac{19}{25}\)

Sửa đề: x0,25

=1,4*317+1,4*679+1,4*4

=1,4*1000

=1400

0,14 x a = 7

          a = 7 : 0,14

          a = 50

14,5 : a = 5

         a = 14,5 : 5 

          a = 2,9

đây là toán 5

ai tk mình đi mk bị âm

a=7:0.14

a=50

a=14,5:5

a= 2,9

=17471,72 bạn nhé

tk mình nha

17471,72

bạn nhé

tk nha@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@2

thanks

Trả lời:

17471,72

Nhs

Hok tốt

0,2 x 317 x  7 + 0,14  x  3520 +  33,1 x 14

\(=1,4\) x \(317+0,14\) x \(3520+331\) x \(14\)

\(=1,4\) x \(317+1,4\) x \(352+1,4\) x \(331\)

\(=1,4\) x \((317+352+331)\)

\(=1,4\) x \(1000\)

\(=1400\)

1400

0,2x7=0,14
đặt 0,14 ra ngoài

=1,4x317+1,4x352+1,4x331

=1,4x(317+352+331)

=1,4x1000

=1400

(0,2*0,7)*10*317 + 0,14*3520 + 3310*0,14 =0,14*(3170+3520+3310) =0,14*10000 =1400