1 3/14 - y = 2 7/10
y = 1 15/70 - 2 49/70
y = - 1 34/70
y = - 1 17/35
1/2...............................
13,23,33,43,53,63,73,83,93
<span>2х+17=22+3х
2х-3х=22-17
- х=5
х= - 5
18 + 3х=х+14
3х-х=14-18
2х= - 4
х = -2
25-4х=12-5х
-4х+5х=12-25
х=-13
13х+27=16х+4,5
13х-16х=4,5-27
-3х=-22,5
х=7,5
21х+45=17+14х
21х-14х=17-45
7х= - 28
х= - 4
13х+70=2х+15
13х-2х=15-70
11х=-55
х=-5
3х-1=2(х-2)
3х-1=2х-4
3х-2х=-4+1
х=-3
</span>3(х+5)=7-5х
3х+15=7-5х
3х+5х=7-15
8х=-8
х=-1
19(у-9)=3(у+7)
19у-171=3у+21
19у-3у=171+21
16у=192
у=12
4(х-9)=3(х-8)
4х-36=3х-24
4х-3х=-24+36
х=12
3(2х-9)=5(х-4)
6х-27=5х-20
6х-5х=-20+27
х=7
7(3-2х)=15(1-х)
21-14х=15-15х
-14х+15х=15-21
х=-6
7х-(3+2х)=х+9
7х-3-2х=х+9
5х-х=9+3
4х=12
х=3
13-(2х-5)=х-3
13-2х+5=х-3
-2х-х=-3-5-13
-3х=-21
х=7
3х-(10-9х)-22х - условие написано неверно
3х-10+9х-22х
-10-10х;
26-(17-2х)=5х
26-17+2х=5х
9=5х-3х
2х=9
х=4,5