Question

Tính nhanh

a) ( 36 x 28 + 36 x 45 ) : 73

b) ( 98 x 17 - 26 x 17 ) : 72

Answer 1

a) ( 36 x 28 + 36 x 45 ) : 73

= 36 x (28 + 45 ):73

=36 x 73 :73

= 36 x (73 : 73)

= 36 x 1

= 36

b) ( 98 x 17 - 26 x 17 ) : 72

= 17 x (98-17):72

= 17 x 72 :72

=17 x (72 :72)

= 17 x 1

= 17

Answer 2

a) ( 36 x 28 + 36 x 45 ) : 73 = 36 

b) ( 98 x 17 - 26 x 17 ) : 72 = 17 

Answer 3

Bạn phải giải hẳn ra

Answer 4

a,36

b,17

Answer 5

a)\(\left(36\times28+36\times45\right):73\)

=\(\left[36\times\left(28+45\right)\right]:73\)

=\(36\times73:73=36\)

b)\(\left(98\times17-26\times17\right):72\)

=\(\left[17\times\left(98-26\right)\right]:72\)

=\(17\times72:72=17\)

Answer 6

a) (36x28+36x45) :73

 =   [ 36x (28+45)] : 73

  =    36x 73:73

   =    36x1

   = 36

b) (98×17-26×17) : 72

= [ 17×( 98-26)] : 72

=   17× 72:72

= 17×1

=17

Answer 7

a, ( 36 x 28 + 36 x 45 ) : 73

= 36 x ( 28 + 45 ) : 73

= 36 x 73 : 73

= 36

b, ( 98 x 17 - 26 x 17 ) : 72

= 17 x ( 98 - 26 ) : 72

= 17 x 72 : 72 

= 17

Answer 8

a) (36 x 28 + 36 x 45) : 73

= 36 x (28 + 45) : 73

= 36 x 73 : 73

= 36 x 1

= 36

b) (98 x 17 - 26 x 17) : 72

= 17 x (98 - 26) : 72

= 17 x 72 : 72

= 17 x 1

= 17