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a.(x + 125) : 312 = 14 (dư 300)
x+125 = 14 x 312 + 300
x+125 = 4 668
x= 4 668 - 125
x=4 543
b.(x-234):23=128 (dư 21)
x-234=128 x 23 + 21
x-234=2 965
x=2 965 + 234
x=3 199
c.(x-24) x 2020=2020x33
(x-24)x2020=66 660
x-24=66 660:2020
x-24=33
x=33+24
x=57
d.5 x (x+2019)=3800 x 5
5 x (x+2019)=19 000
x+2019=19000:5
x+2019=3800
x=3800-2019
x=1 781
HẾT=)))
![](https://rs.olm.vn/images/avt/0.png?1311)
a.(x + 125) : 312 = 14 (dư 300)
x+125 = 14 x 312 + 300
x+125 = 4 668
x= 4 668 - 125
x=4 543
b.(x-234):23=128 (dư 21)
x-234=128 x 23 + 21
x-234=2 965
x=2 965 + 234
x=3 199
c.(x-24) x 2020=2020x33
(x-24)x2020=66 660
x-24=66 660:2020
x-24=33
x=33+24
x=57
d.5 x (x+2019)=3800 x 5
5 x (x+2019)=19 000
x+2019=19000:5
x+2019=3800
x=3800-2019
x=1 781
HẾT=)))
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x-567 = 0.234
x-567= 0
x= 0+567
x=567
tick nhé để cho mình điểm tháng tròn 1080
![](https://rs.olm.vn/images/avt/0.png?1311)
\(x\) : 234 = 405 (dư 123)
\(x\) = 405 x 234 + 123
\(x\) = 94 770 + 123
\(x\) = 94 893
X : 234 = 405 ( dư 123 )
( X - 123 ) : 234 = 405
X - 123 = 405 x 234
X - 123 = 94 770
X = 94 770 + 123
X = 94 893
Vậy X = 94 893
![](https://rs.olm.vn/images/avt/0.png?1311)
a: =1250:25=50
b: =234(45+55)+234=23400+234=23634
c: =1000x1000=1000000
![](https://rs.olm.vn/images/avt/0.png?1311)
532 x y = 234 x 2
532 x y = 468
y = 468 : 532
y = 0,879699248
![](https://rs.olm.vn/images/avt/0.png?1311)
a,234.4+234.5+234=234(4+5+1)=234.10=2340
b,135.16-135.2-135.4=135(16-4-2)=135.10=1350
c,1/2+1/4+1/8+1/16+1/32+1/64=1-1/2+1/2-1/4+1/4-1/8+1/8-1/16+1/16-1/32=1-1/32=31/32
a) 234 x4 + 234 x 5 + 234 = 234 x ( 1+4+5)=2340
b)135 x16 -135 x2 -4 x135 =135 x (16-2-4) =1350
29,25