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a) \(17,34.99+18-0,66=17,34.99+17,34\)
\(=17,34.99+17.34.1=17,34.\left(99+1\right)=17,34.100=1734\)
b) \(0,9.95+1,8.2+0.9=0,9.95+0,9.2.2+0.9.1=0,9.95+0,9.4+0,9.1\)
\(=0,9.\left(95+4+1\right)=0,9.100=90\)
c) \(37,2.101-37,0,2=37,2.101-\left(37+0,2\right)=37,2.101-37,2\)
\(=37,2.101-37,2.1=37,2.\left(101-1\right)=37,2.100=3720\)
=>X. 1,7=0,9 . 0,25
=> X . 1,7 = 0,225
=> X =0,225 : 0,17
=> \(\frac{0,225}{0,17}\)
Vậy x= \(\frac{0,225}{0,17}\)
x/0.9=0.25/1.7
x*100/90=25/170
x*17*100/1530=225/1530
=>x*17*100=225
x*1700=225
x=225/1700
x=
2x+0.25-x=0.9
<=> x+x+0.25-x=0.9
<=> (x-x)+x+0.25=0.9
<=> 0+x+0.25=0.9
<=> x=0.9-0.25=0.65
Vậy x=0.65
(x+0,9 ) . (1-0,4)=2412
(x+0,9).0,6=2412
x+0,9=2412 : 0,6
x+0,9=4020
x=4020-0,9
x=4019,1
tick đúng nha
1 : 0,9 = bao nhiêu vậy
\(\text{1 : 0,9}=\frac{10}{9}\)
học tốt
0,9.95+1,8.2+0,9
=0,9.95+0,9.2.2+0,9.1
=0,9.(95+2+2+1)
=0,9.100
=90
a: \(=\left(\dfrac{5}{6}+\dfrac{3}{4}-\dfrac{9}{10}\right):\left(\dfrac{5}{6}-\dfrac{3}{4}+\dfrac{9}{10}\right)\)
\(=\dfrac{50+45-54}{60}:\dfrac{50-45+54}{60}\)
\(=\dfrac{41}{59}\)
b: \(=13+\dfrac{7}{12}+4+\dfrac{3}{10}-8-\dfrac{7}{10}=\dfrac{3}{10}+1=\dfrac{13}{10}\)
c: \(=31+\dfrac{4}{17}-8-\dfrac{5}{13}-11-\dfrac{8}{13}\)
\(=11+\dfrac{4}{17}=\dfrac{191}{17}\)
0,9.95+ 1,8.2 + 0,9
= 0,9.95 + 0,9. 2.2 + 0,9.1
= 0,9.(95+4+1)
= 0,9.100
= 90