Question

Tính hợp lý:

( 158 x 168 - 79 x 58 ) : 11 : 10

Answer 1

(158x168-79x58):11:10

=(26 544-4582):11:10

=21 962:11:10

=21 962/11:10

=10981/55

Answer 2

( 158 x 168 - 79 x 58 ) : 11 : 10 = ( 158 x 168 - 79 x 2 x 29) : 11 : 10

= ( 158 x 168 - 158 x 29) : 11 : 10

= 158 x ( 168 - 29 ) : 11 : 10

= 158 x 139 : 11 : 10

= 21962 : 11 : 10

= 10981/55

Answer 3

đáp số = \(\frac{10981}{55}\)