\(=-43\cdot\left(38+12-50\right)=-43\cdot0=0\)
-43.38+12.(-43)-50.(-43)
=-43.(38+12-50)
-43.(50-50)
=-43.0=0
(36+79)+(145-79-36)
10-[12-(-9-1)]
(38-29+43)-(43+38)
271-[(43)+271-(-17)]
-144-[29-(+144)-(+144)]
a) (-145) – (18 – 145)
b) 111 + (-11 + 27)
c) (27 + 514) – (486 – 73)
d) 10 – [12 – (-9 – 1)]
e) (38 – 29 + 43) – (43 + 38)
f) 271 – [(-43) + 271 – (-17)]
mn giúp mình vs mình đang gấp
bỏ ngoặc rùi tính ạ
[27+514]-[486-73]
10-[12-[-9-1]]
[38-29+43]-[43+38]
271-[[-43]+271-[-17]]
-144-[29-[+144]-[+144]]
bo ngoac roi tinh
3. Bỏ ngoặc rồi tính :
a, 10 - ( 12 - ( -9 -1 ) )
b, ( 38 -29 + 43 ) - ( 43 + 38 )
c, 271 - ( (-43 ) + 271 - ( -17 ) )
d, -144 - ( 29 - ( + 144 ) - ( + 144 )
Tính
a . 25 − 58 − 9 b . 1 − ( 26 + 3 ) c . 12.15 − 12.5 d . 10 − [ 12 − ( − 9 − 1 ) ] e . ( 38 − 29 + 43 ) − ( 43 + 38 ) f . 2575 + 37 − 2576 − 29
Bỏ ngoặc rồi tính:
f. (36 + 79) + (145 - 79 - 36)
g. 10 - [12 - (-9 - 1]
h. (38 - 29 + 43) - (43 + 38)
i. 271 - [(-43) + 271 - (-17)]
k. -144 - [29 - (+144) - (+144)]
a.10-[12-(-9-1)].
b.271-[(-43)+271-(-17)].
c.(144-97)-144.
d.111+(-11+27).
e.(36+79)+(145-79-36).
f.(38-29+43)-(43+38).
g.4524-(864-999)-(36+999)
-5-9-11-24
-14-7-12-24
12+38-30-22
34+(-43)+66-55
-10-14-16+43
Thực hiện phép tính (hợp lý nếu có thể)
a) − 105 + − 25 + ( − 105 ) + 50
b) 465 + − 38 + − 465 − 12 − − 42
c) 65. − 19 + − 19 .24 + − 19 .11
d) − 3 2 + 2 3 − − 5 2 + 4 3
