Question

tinh nhanh 

(78*15-28): (50+78*14)

ai xong cho 3 tich.

Answer 1

( 78 * 15 - 28) / ( 50 + 78 * 14 )

= ( 1170 - 28 ) / ( 50 + 1092 )

= 1142 / 1142

= 1

chúc bạn học tốt.

Answer 2

=(78*14+78-28): (50+78*14)

=(50+78*14):(50+78*14)=1

Answer 3

[ 78 x (14 + 1) - 28] : ( 50 + 78 x 14)

( 78 x 14 + 78 - 28 ) : ( 50 + 78 x 14)

( 78 x 14 + 50 ) : ( 50 + 78 x 14 ) = 1

Answer 4

(78*15-28): (50+78*14) = (1170 - 28) : (50 + 78 x14)

                                      =   1142 : (50 + 78 x 14 )

                                      =    1142 : (50 + 1092 )

                                      =    1142 : 1142

                                      =      1

Answer 5

(78*15-28): (50+78*14)

= (78.14+78-28):(50+78.14)

= (78.14+50):(50+78.14)

= 1

Answer 6

\(\left(78\cdot15-28\right):\left(50+78\cdot14\right)\)

\(=\left(78\cdot14+78-28\right):\left(50+78\cdot14\right)\)

\(=\frac{78\cdot14+50}{50+78\cdot14}\)

\(=1\)

Answer 7

\(\left(78.15-28\right):\left(50+78.14\right)\)

\(=\frac{78.14+50}{50+78.14}\)

\(=1\)