(5/6 - 3/8) : 3/4 - (3/8 + 7/20) : 1 цел. 9/20 = 1/9
1) 5/6 - 3/8 = 20/24 - 9/24 = 11/24
2) 11/24 : 3/4 = 11/24 * 4/3 = (11*1)/(6*3) = 11/18
3) 3/8 + 7/20 = 15/40 + 14/40 = 29/40
4) 29/40 : 1 цел. 9/20 = 29/40 : 29/20 = 29/40 * 20/29 = 20/40 = 1/2
5) 11/18 - 1/2 = 11/18 - 9/18 = 2/18 = 1/9
<span>3(0, 9x-1)-(x+0, 6)= - 0, 2 </span>
2.7х-3-х-0.6= - 0.2
2.7х-х= - 0.2+3+0.6
1.7х= 3.4
х=3.4/1,7
x=2
5400
*
38000
______
2 052 0000