Question

Answer 1

B1a/ 102 x 12 - (343:7+285)

= 102 x 12 - (49+ 285)

= 102x 12 - 334

= 1224 - 334

= 890

 

Answer 2

1/ 102 x 12 - (343:7+285)

= 102 x 12 - (49+ 285)

= 102x 12 - 334

= 1224 - 334

= 890

2/

110,25 - X = 7,2 x 3 + 5,6

110,25 - X= 57,2

X           = 110,25 - 57,2

X           = 53,05

Answer 3

bài 1:

a) 102 x 12 - ( 343 : 7 + 285 ) = 1224 - 334

                                                     = 890

b) \(\frac{36x4+29}{36x5-7}\)=\(\frac{173}{173}\)=1

bài 2:

110,25 - X = 17,2 x 3 + 5,6

110,25 - X = 57,2

X = 110,25 - 57,2

X=53,05