1. 2
2. 2
3. 3
4. 2
5. 1
6. 4
7. 3
8. 4
9. 2
10. 3
11.
Домножаем все на 9
15х-9=3-10х+2
25х=14
х=0.56
1.
9х2+24х+16-(3х+9х2-1-3х)=65
9х2+24х+16-3х-9х2+1+3х=65
24х=48
Х=2
2.
{-2х+у=-2 {2х+у=10
2у=8
У=4
{х=-2-у/-2 {х=10-у/2
Х=3
3.
2.4ху-0.3х2-2.4ху+0.4у+0.3х2-0.4у+5=5