S = 110 ,5 x 125 = 13.812.5

cho đúng nhé

a)     176 + 15 + 24 + 235 = ( 176 + 24) + ( 15 + 235)

                                  = 200 + 250

                                  = 450                  

a) (–30) + (–5) = –(30 + 5) = –35.

b) (–7) + (–13) = – (7 + 13) = –20;

c) (–15) + (–235) = –(15 + 235) = –250.

mà 235>225

=>\(\sqrt{235}>15\)

\(\sqrt{235^2}=235\)

15²=225

ta có

a²>b²

=>a>b

mà 23\(\sqrt{235}>15\)5>225

=>

what

a ) = (23 + 4) : 12

= 27 : 12

= 9 /4

b) = (235- 112):15

= 41/5

a) 23 : 12 + 4  : 12 

= ( 23 + 4 ) : 12

= 27 : 12 

= 2,25

b) 235 ; 15 - 112 : 15 

= ( 235 -112) : 15

= 123 : 15 

= 8,2

a)23:12 + 2:12 
= (23+4):12
= 27:12
=2,25
b) 235:15-112:15
= (235-112):15
=123:15
=8,2

Ta có: 235 + (x - 15) = 320

=> x - 15 = 320 - 235

=> x - 15 = 85

=> x = 85 + 15

=> x = 100

235 + (x - 15) = 320

x - 15 = 320 - 235 

x - 15 = 85

      x = 85 + 15

      x = 100

235 + (x - 15) = 320

320 - 235 = x - 15

x - 15 = 85

x = 85 + 15

x = 100

Vạy x = 100

a) 48

b) 

 a, 48 

b, 56,4 

Ủng hộ nhé !

a)=320*15:100=48

b)235*24:100=56,4

tk mình nghen

thanks