312*401+101
_____________________
313*401-300
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
-(-229 ) + (-219 ) - 401 + 12
= 209 - 219 - 401 + 12
= -10 - 401 + 12
= -411 + 12
= - 399
300 - (-200) - (-120) + 18
= 300 + 200 + 120 + 18
= 500 + 120 + 18
= 620 + 18
= 638
= 10 - 401 + 12
= -391 + 12
= -379
= 500 + 120 + 18
= 620 + 18
= 638
\(a.\left[\left(-8\right)+\left(-7\right)\right]+\left(-10\right)=\left(-15\right)+\left(-10\right)=-25\)
\(b.555-\left(-333\right)-100-80=\left(555+333\right)-\left(100+80\right)=888-180=708\)
\(c.-\left(-229\right)+\left(-219\right)-401+12=\left(229-219\right)-\left(401-12\right)=10-389=-379\)
\(d.300-\left(-200\right)-\left(-120\right)+1=\left(300+200\right)+\left(120+1\right)=500+121=621\)
Trl:
d) \(555-\left(-33\right)-100-80\)
\(=588-20\)
\(=568\)
e) \(-\left(-229\right)+\left(-219\right)-401+12\)
\(=10-413\)
\(=403\)
f) \(300-\left(-200\right)-\left(-120\right)+18\)
\(=500-\left(-102\right)\)
\(=602\)
Hc tốt
8 + ( - 7 ) + ( - 10 ) = - 9
229 + 219 + 401 - 12 = 837
300 + 200 + 120 + 18 = 638
\(\left(-8\right)+\left(-7\right)+\left(-10\right)\)
\(=-8-7-10\)
\(=-15-10=-25\)
\(\left(-229\right)+219-401+12\)
\(=\left(219-229\right)-401+12\)
\(=-10-401+12\)
\(=-399\)
\(555-\left(-333\right)-100-80\)
\(=555+333-100-80\)
\(=888-100-80\)
\(=780-80=700\)
\(300-\left(-200\right)-\left(-120\right)+18\)
\(=300+200+120+18\)
\(=500+120+18\)
\(=620+18\)
\(=638\)
a) = (-15)+(-10)
= -25
b) = (-222)-100-80
= (-322)-80
= -402
c) = 229+219-401+12
= 448-401+12
=47+12
= 59
d) = 500-(-120)+18
= 620+18
= 638
\(\frac{312.401+101}{313.401-300}\)
\(=\frac{312.401+101}{\left(312+1\right).401-300}\)
\(=\frac{312.401+101}{312.401+401-300}\)
\(=\frac{312.401+101}{312.401+101}\)
\(=1\)
\(\frac{312\times401+101}{313\times401-300}\)
\(=\frac{312\times401+101}{\left(312+1\right)\times401-300}\)
\(=\frac{312\times401+101}{312\times401+\left(401-300\right)}\)
\(=\frac{312\times401+101}{312\times401+101}=1\)
~ Hok tốt ~