Question

Tính giá trị biểu thức theo cách thuận tiện nhất

8/14 + 5/12 + 6/14 + 8/12 - 1/12

Answer 1

\(\frac{8}{14}+\frac{5}{12}+\frac{6}{14}+\frac{8}{12}-\frac{1}{12}\)

\(=\left(\frac{8}{14}+\frac{6}{14}\right)+\left(\frac{5}{12}+\frac{8}{12}-\frac{1}{12}\right)\)

\(=1+1\)

\(=2\)

Answer 2

\(\frac{8}{14}+\frac{5}{12}+\frac{6}{14}+\frac{8}{12}-\frac{1}{12}\)

\(=\)\(\left(\frac{8}{14}+\frac{6}{14}\right)+\left(\frac{5}{12}+\frac{8}{12}-\frac{1}{12}\right)\)

\(=\)\(1+1\)

\(=\)\(2\)

Answer 3

\(\frac{8}{14}\) \(+\) \(\frac{5}{12}\) \(+\) \(\frac{6}{14}\) \(+\) \(\frac{8}{12}\) \(-\) \(\frac{1}{12}\)

=   (  \(\frac{8}{14}\) \(+\) \(\frac{6}{14}\))    \(+\)(  \(\frac{5}{12}\) \(+\) \(\frac{8}{12}\) \(-\) \(\frac{1}{12}\))

=               \(1\)                    \(+\)                       \(1\)

=                           \(2\)

- Hok T - 

Answer 4

8/14 + 5/12 + 6/14 + 8/12 - 1/12

= ( 8/14 + 6/14 ) + ( 5/12 - 1/12 + 8/12 )

= 1 + ( 5/12 - 1/12 + 8/12 )

= 1 + ( 4/12 + 8/12 )

= 1 + 1

= 2

Answer 5

\(\frac{8}{14}+\frac{5}{12}+\frac{6}{14}+\frac{8}{12}-\frac{1}{2}\)

\(=\left(\frac{8}{14}+\frac{6}{14}\right)+\left(\frac{5}{12}+\frac{8}{12}-\frac{1}{2}\right)\)

\(=1+1\)

\(=2\)

Answer 6

8/14 + 5/12 + 6/14 + 8/12 - 1/12

=( 8/14 +  6/14 ) + ( 8/12 + 5/12 - 1/12 )

= 1 + 1 

= 2 

Answer 7

Đáp án là 2