\(a,2x+15=27\)
\(\Rightarrow2x=27-15\)
\(\Rightarrow2x=12\)
\(\Rightarrow x=12\div2\)
\(\Rightarrow x=6\)
a)2x+15=27
=> 2x= 27-15=12
=>x=6
b) 8x-4x = 1208
=> 4x =1208
=>x=302
c) 75883 -(31200+x) =999
=> 75883-31200-999=-x
=>x=-43684
d)2x+3x=1505
=>5x=1505
=>x=301
e)5x-x=4088
=> 4x=4088
=>x=1022
a) 2x +15=27
2x = 27-15
2x = 12
x = 12:6
x= 6
b) 8 x - 4x = 1208
4x = 1208
x = 1208 : 4
x = 302
c) 75833 - ( 31200 +x)=999
31200 +x= 75883-999
31200+x=74884
x=74884-31200
x=43684
d) 2x +3x=1505
5x = 1505
x = 1505:5
x =301
5x - x =4088
4x = 4088
x = 4088 : 4
x = 1022
\(2x+15=27\)
\(2x=27-15\)
\(2x=12\)
\(x=12:2\)
\(x=6\)
\(8x-4x=1208\)
\(4x=1208\)
\(x=1208:4\)
\(x=1302\)
\(75883-\left(3120+x\right)=999\)
\(75883-3120-x=999\)
\(72763-x=999\)
\(x=72763-999\)
\(x=71764\)
\(2x+3x=1505\)
\(5x=1505\)
\(x=1505:5\)
\(x=301\)
\(5x-x=4088\)
\(4x=4088\)
\(x=4088:4\)
\(x=1022\)
a) 2x+15=27
2x=27-15
2x=8
x=4
vậy..
b) 8x-4x=1208
x.(8-4)=1208
x.4=1208
x=1208:4
x=302
vậy..
c) 75883-(31200+x)=999
31200+x=75883-999
31200+x=74884
x=74884-31200
x=43684
vậy...
d)2x+3x=1505
x.(2+3)=1505
x.5=1505
x=1505:5
x=301
vậy...
e)5x-x=4088
x.(5-1)=4088
x.4=4088
x=4088:4
x=1022
vậy...
a) \(2x+15=27\Rightarrow2x=27-15=12\)
\(\Rightarrow x=12:2=6\)Vậy \(x=6\)
b) \(8x-4x=1208\Rightarrow\left(8-4\right)x=1208\)
\(\Rightarrow4x=1208\Rightarrow x=1208:4=302\)
Vậy \(x=302\)
a) 2x +15 = 27
=> 2x = 27 - 15
=> 2x = 12
=> x = 6
b) 8x - 4x = 1208
=> 4x = 1208
=> x = 302
a) Ko ghi lại đề
= 2x = 27 - 15
=> 2x =12
=> x =6
b)
=> 4x = 1208
=> x= 302
c) ???????????? sai đề
uư
