a) x + 2,26 = 6,72 - 3,5
x + 2,26 = 3,37
x = 3,37 - 2,26
x = 1,11
b) x : 2,5 = 4 . 7,5
x : 2,5 = 30
x = 30 . 2,5
x = 75
a)x+2,26+3,5=6,27
x+2,26 =6,27-3,5
x+2,26 =2,77
=>x =2,77-2,26
=>x =0,51
b)x:2,5:7,5=4
x:2,5 =4.7,5
x:2,5 =30
=>x =30.2,5
=>x =75
c)8,75.x+1,25=2006
8,75.x =2006-1,25
8,75.x =2004,75
=>x =2004,75:8,75
=>x =229,11...
a) x + 2,26 + 3,5 = 6,72
x + 2,26 = 6,72 - 3,5
x + 2,26 = 3,22
x = 3,22 - 2,26
x = 0,96
b) x : 2,5 : 7,5 = 4
x: 2,5 = 4 . 7,5
x : 2,5 = 30
x = 30 : 2,5
x = 12
c) 8,75 . x + 1,25 = 2006
8,75 . x = 2006 - 1,25
8,75 . x = 2004,75
x = 229.114285714
d) 37,5 . x - 1,5 : x = 72
(37,5 - 1,5 ). x = 72
36 . x = 72
x = 72 : 36
x = 2
a) x+ 2,26+3,5=6,72 b) x:2,5:7,5=4
x+5,76=6,72. x:(2,5.7,5)=4
. x=6,72-5,76. x:18,75=4
. x=1,02 x= 4.18,75
x= 75
c) 8,75.x+1,25=2006.
8,75.x=2006-1,25.
8,75.x=2004,75
. x=2004,75:8,75
. x=229,11428
a)x+2,26 +3,5=6,72 b) x:2,5:7,5=4
x+2,26=6,72-3,5 x:2,5 =4x7,5
x+2,26=3,22 x:2,5=30
x=3,22-2,26 x=30x2,5
x=0,98 x=75
c)8,75xX+1,25=2006 d)3,75xX-1,5:X=72
8,75xX=2006-1,25 chịu
8,75xX=2004,75
X=2004,75:8,75
X=299,114...
