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a) ( x - 34 ) . 15 = 0 b) 18 . ( x - 16 ) = 18
x - 34 = 0 : 15 x - 16 = 18 : 18
x - 34 = 0 x - 16 = 1
x = 0 + 34 x = 1 + 16
x = 34 x = 17
a) (x-34).15=0
=> x-34 =0:15
=> x-34=0
=> x=0+34=34
b)18.(x-16)=18
=>x-16=18:18
=>x-16=1
=>x=1+16
=>x=17
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a,(x-15)-75=0
x-15 =75
x =75+15
x =90
b,72-(6.x+5)=55
6.x+5=72-55
6.x+5=17
6.x=17-5
6.x=12
x=12:6
x=2
c,575-(6.x+70)=445
6.x+70=575-445
6.x+70=130
6.x=130-70
6.x=60
x=60:6
x=10
d,(x-34).15=0
x-34=0
x=34
e,15+(18-x)=26
18-x=26-15
18-x=11
x=18-11
x=7
g,(x-5):16=2
x-5=2.16
x-5=32
x=32+5
x=37
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( x - 34 ) . 15 = 0
x - 34 = 0 : 15
x - 34. = 0
x. = 0 + 34
x. = 34
18 . ( x - 16 ) = 18
x - 16. = 18 : 18
x - 16. = 1
x = 1 + 16
x = 17
Chúc bn hok tốt ~
t mk nha cảm ơn
( x - 34 ). 15=0
x-34 = 0.15
x-34 = 0
x = 34+0
x = 34
18.(x-16) = 18
x-16 = 18:18
x-16 = 1
x = 16 + 1
x = 17
*******************CHÚC BẠN HỌC TỐT ***************
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) ( x - 34 ) . 15 = 0
=> x - 34 = 0
=> x = 34
b) 18.(x-16) = 18
=> x - 16 = 1
=> x = 1 + 16
=> x = 17
a) ( x - 34 ) . 15 = 0
=> x - 34 = 0 : 15
=> x - 34 = 0
=> x = 34
b) 18.(x-16) = 18
=> x - 16 = 18 : 18
=> x - 16 = 1
=> x = 1 + 16
=> x = 17
![](https://rs.olm.vn/images/avt/0.png?1311)
a)
( x - 34 ) . 15 = 0
mà 15 khác 0
=> x - 34 = 0
=> x = 34
b)
18 ( x - 16 ) = 18
=> x - 16 = 1
=> x = 17
Vậy,..........
a,(x-34).15 = 0
=> x-34 = 0
=> x = 34.
b,18.(x-16)=18
=> x- 16 = 1
=> x = 17
hk tốt
![](https://rs.olm.vn/images/avt/0.png?1311)
b) ( x + 15 ) x 18 = 450
( x + 15 ) = 450 : 18
x + 15 = 25
x = 25 - 15
x = 10
(x-34).15=0
(x-34)=0:15
x-34=0
x=0+34
x=34
(18-x).26=0
18-x=0:26
18-x=0
x=0+18
x=18
(x-34).15=0
x-34=0:15
x-34=0 =>x=0+34
=>x=34
(18-x).26=0
18-x=0:26
18-x=0 =>x=18-0
=>x=18