1,6x1,1+1,8:4
1,8*3+1,8*4*1,8*6-5,4
Tính bằng cách thuận tiện nhất:
1,8 : 0,25 + 1,8 : 0,5 + 1,8 x 4
=1,8 * 1/0,25 +1,8 *1/0.5 +1,8*4
=1,8(1/0,25+1/0.5+4)
=1,8*10
=18
1,8:(-3/4)
\(1,8\div\left(-\dfrac{3}{4}\right)\)
\(=1,8\times-\dfrac{4}{3}\)
\(=-\dfrac{12}{5}\)
tim x
x - [ 3,3 + 2,4 ] = 11,6
[ x - 4,6 ] - 2,6 = 1,8
[ x + 1,8 ] -0,91 = 15,02
x.2 + x.4 = 9,84
100. [ x 1,8 ] = 456,3
47 - 5 . x = 27
x : 3 .4 = 1,248
8.x - 3 . x = 1,95
x: 2 - 8,6 = 2,43
x - ( 3,3 + 2,4 ) = 11,6
x - 5,7 =11,6
x = 11,6 + 5,7
x = 17,3
<=>x-5,7=11,6 <=>x-4,6=1,8+2,6
<=>x =11,6+5,7=17,3 <=>x-4,6=4,4
Vậy x=17,3 <=>x =4,4+4,6=9 Vậy x=9
<=>x+1,8=15,02+0,91=15,93 <=>5.x=47-27=20
<=>x =15,93-1,8=14,13 <=>x =20:5=4
Vậy x=14,13 Vậy x=4
<=>x:3=0,312 8.x-3.x=1,95
<=>x =0,312.3 x.5 =1,95
<=>x =0,931 x =1,95:5
Vậy x=0,936 x=0,19 vậy x=0,19
<=>x:2=2,43+8,6=11,03
<=>x =11,03.2= 22,06
Vậy x=22,06
x: 4 1/6 =1,8
\(x:4\frac{1}{6}=1,8\)
\(x:\frac{25}{6}=\frac{18}{10}\)
\(x=\frac{18}{10}.\frac{25}{6}\)
\(x=\frac{15}{2}\)
Cho 1,8 + 1,8 + 1,8 + 5,4= X x 1,8. Tìm x
\(1,8+1,8+1,8+5,4=x\times1,8\)
\(=3\times1,8+5,4=x\times1,8\)
\(=10,8=x\times1,8\)
\(x=6\)
0,9 x 2 + 1,8 x 3 + 2,7 x 4
1/5 : 1/10 - 1/3 (6/5 - 9/4)
31,2 x 1,8 - 315, 4 : 415
(Giúp)
\(\dfrac{1}{5}:\dfrac{1}{10}-\dfrac{1}{3}\left(\dfrac{6}{5}-\dfrac{9}{4}\right).\\ =2-\dfrac{1}{3}.\dfrac{-21}{20}.\\ =2-\left(-\dfrac{7}{20}\right)=2+\dfrac{7}{20}=\dfrac{47}{20}.\)
\(31,2.1,8-315,4:415.\\ =56,16-0,76=55,4.\)
13,5*1,3+1,7*4
15,3-3,3*4,8/1,8
13,5*1,3+1.7*4=24,35
15,3-3,3*4,8/1,8=5,6
đúng thì k nha ^^