(0,8х - 3) * (-9) = 0,3 * (0,6х - 8,4);
-7,2х + 27 = 0,18х - 2,52;
-7,38 = -29,52;
х = 4.
___1\4______3\4___
_____5\12______11\12
_______7\12_2\3_____
__1\6_1\4_________
19х-15х=96
4х=96
х=24
5б+3б=456
8б=456
б=57
6÷7/9=6×9/7=54/7=7 5/7
16÷4/11=16×11/4=44
13÷26/29=13×29/26=29/2=14 1/2
7/9÷5=7/9×1/5=7/45
9/16÷6=9/16×1/6=3/32
1 5/9÷1 8/27=14/9÷35/27=
14/9×27/35=6/5=1 1/5
2 10/13÷3 3/26=36/13÷81/26=
=36/13×26/81=8/9
2 4/7÷1 1/35=18/7÷36/35=
=18/7×35/36=5/2=2 1/2
1) а+4,6-а-9,8=-5,2
2) -8,8+х-4,7-х=-13,5
3) -9,4-х+у+4,1-у=-х-5,3
4) а-б+6,1+а+б-6,1=2а