Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
2:
a: 27(x-45)=0
=>x-45=0
=>x=45
b: (x-47)-115=0
=>x-47=115
=>x=162
d: x-105:21=15
=>x-5=15
=>x=20
1:
a: =35*(34+86)+65*(75+45)
=120*35+120*65
=120*100=12000
b: \(=39\left(53+47\right)-21\left(53+47\right)\)
=18*100=1800
a) \(-39-\left(15+x\right)=18\)
\(-39-15-x=18\)
\(-54-x=18\)
\(x=-54-18\)
\(x=-72\)
vậy \(x=-72\)
b) \(31-\left(13+x\right)=18.\left(-4\right)\)
\(31-13-x=-72\)
\(18-x=-72\)
\(x=18+72\)
\(x=90\)
vậy \(x=90\)
c) \(58-\left(47+3x\right)=-18-2x\)
\(58-47-3x+2x=-18\)
\(11-x=-18\)
\(x=11+18\)
\(x=29\)
vậy \(x=29\)
d) \(37-\left(115+x\right)=188\)
\(37-115-x=188\)
\(-78-x=188\)
\(x=-78-188\)
\(x=-266\)
vậy \(x=-266\)
a)
\(-39-\left(15+x\right)=18\)
\(\Rightarrow15+x=-39-18\)
\(\Rightarrow15+x=-57\)
\(\Rightarrow x=-57-15\)
\(\Rightarrow x=-72\)
Vậy \(x=-72\)
b)
\(31-\left(13+x\right)=18.\left(-4\right)\)
\(\Rightarrow31-\left(13+x\right)=-72\)
\(\Rightarrow13+x=31-\left(-72\right)\)
\(\Rightarrow13+x=103\)
\(\Rightarrow x=103-13\)
\(\Rightarrow x=90\)
Vậy \(x=90\)
a) ( x - 47 ) - 115 = 0
( x - 47 ) = 0 + 115
( x - 47 ) = 115
x = 115 + 47
x = 162
b) 315 + ( 146 - x ) = 401
( 146 - x ) = 401 - 315
146 - x = 86
x = 146 - 86
x = 60
chúc bạn học tốt ^ _ ^
\(a)\)\(\left(x-47\right)-115=0\)
\(\left(x-47\right)=0+115\)
\(x-47=115\)
\(x=115+47\)
\(x=162\)
\(b)\)\(315+\left(146-x\right)=401\)
\(\left(146-x\right)=401-315\)
\(146-x=86\)
\(x=146-86\)
\(x=60\)
a) \(\left(x-47\right)-155=0\)
\(x-47=155\)
\(x=202\)
Vậy \(x=202\)
b) \(315+\left(146-x\right)=401\)
\(146-x=86\)
\(x=60\)
Vậy\(x=60\)
a= [x-47]-115=0 => 115+0+47=162
b=315+[146-x]=401=>401+146-315=231
hok tôt
nha
a) ( x-47) - 115=0
x - 47 = 0 + 115 = 115
x= 115 + 47 = 162
b) 315 + ( 146 -x ) = 401
146 - x = 401 - 315 = 86
x= 146 -86 =60
a) \(\left(x-47\right)-115=0\)
\(x-47=115\)
\(x=115+47\)
\(x=162\)
b)\(315+\left(146-x\right)=401\)
\(146-x=401-315\)
\(146-x=56\)
\(x=146-56\)
\(x=90\)
a ) ( x - 47 ) - 115 = 0
( x - 47 ) = 0 + 115
( x - 47 ) = 115
x = 115 + 47
x = 162
b ) 315 + ( 146 - x ) = 401
( 146 - x ) = 401 - 315
( 146 - x ) = 86
x = 146 - 86
x = 60
Duyệt nha
a/x thuoc N*
b/(x-47)-155=0
(x-47) =0+155
x-47 =155
x =155+47
x =162
c/315+(146-x)=401
(146-x)=401-315
146-x =86
x =146-86
x =60
a) x=0
b) x=162
c) x=60