Tính giá trị biểu thức
a) [545-(45+4.25)]:50-2000:250+215:213
b) [504-(25.8+70)]:9-15+90
c)5.{26-[3.(5+2.5)+15]:15}
d)16:{400:[200-(37+46.3)]}
e) 12:{390:[500-(125+35.7)]}
g) 12000-91500.2+1800.3+1800.2:3
j){[126(36-31)2.2]-9}.1001
g)[(14+3).2-5].9.1-325
f)[(46-32)2-(54-42)2 ] 36-1872
giúp mình với! mình đang cần giấp
a.\(\left[545-\left(45+4.25\right)\right]:50-2000:250+2^{15}:2^{13}\)
=\(\left[545-145\right]:50-8+2^2\)
=\(400:50-8+4\)
=8-8+4
=4
b.\(\left[504-\left(25.8+70\right)\right]:9-15+9^0\)
=\(\left[504-270\right]:9-15+1\)
=234:9-14
=26-14
=12