Question

tính thuân tiện 

5/12x2/3+2/3x7/12+1/3

Answer 1

5/12 x 2/3 + 2/3 x 7/12 + 1/3

= 2/3 x ( 5/12 + 7/12 ) + 1/3

= 2/3 x 1 + 1/3

= 2/3 + 1/3

= 1

Answer 2

5/12x2/3+2/3x7/12+1/3

=2/3x(5/12+7/12)+1/3

=2/3x1+1/3

=2/3+1/3

=1

k tui nha @@@

Answer 3

\(\frac{5}{12}\)x \(\frac{2}{3}\)+ \(\frac{2}{3}\)x \(\frac{7}{12}\)+ \(\frac{1}{3}\)

= \(\frac{2}{3}\)x ( \(\frac{5}{12}\)+ \(\frac{7}{12}\) ) + \(\frac{1}{3}\)

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

= \(\frac{2}{3}\)+ \(\frac{1}{3}\)

= 1

Answer 4

\(\frac{5}{12}x\frac{2}{3}+\frac{2}{3}x\frac{7}{12}+\frac{1}{3}\)

\(=\frac{2}{3}x\left(\frac{5}{12}+\frac{7}{12}\right)+\frac{1}{3}\)

\(=\frac{2}{3}x\frac{12}{12}+\frac{1}{3}\)

\(=\frac{2}{3}x1+\frac{1}{3}\)

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

Answer 5

= 2/3x ( 5/12+7/12) +1/3

= 2/3x1+1/3

= 2/3 +1/3

=3/3=1

nha bn

Answer 6

5/12 x 2/3 + 2/3 x 7/12 + 1/3 

= 2/3 x (5/12 + 7/12) + 1/3

= 2/3 x 12/12 + 1/3

= 2/3 + 1/3 

= 1

Answer 7

\(\frac{5}{12}\cdot\frac{2}{3}+\frac{2}{3}\cdot\frac{7}{12}+\frac{1}{3}\)

\(=\frac{2}{3}\cdot\left(\frac{5}{12}+\frac{7}{12}\right)+\frac{1}{3}\)

\(=\frac{2}{3}\cdot1+\frac{1}{3}\)

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

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

\(=1\)