Question

(278.92-62.92):( 70 . 92 )

Answer 1

\(\left(278\cdot92-62\cdot92\right):\left(70\cdot92\right)\)

\(=\left[\left(278-62\right)\cdot92\right]:\left(70\cdot92\right)\)

\(=\left(212\cdot92\right):\left(70\cdot92\right)\)

\(=212:70\)

Answer 2

=\(\dfrac{278.92-62.92}{70.92}=\dfrac{92.\left(278-62\right)}{70.92}=\dfrac{216}{70}=\dfrac{108}{35}\)

Answer 3

chúc bạn học tốt!!!

tick cho mk nhé!!!!!