Question

2) x+2 6 = y-3 15 =1,\\ (x + 2, 5)/9 - (y + 3)/6 = 1/8​

Answer 1

Ответ:

{(х+2)/6-(у-3)/15=1|×30

{(х+2,5)/9-(у+3)/6=(1/3)|×18

{5(х+2)-2(у-3)=30

{2(х+2,5)-3(у+3)=6

{5х+10-2у+6=30

{2х+5-3у-9=6

{5х-2у=30-16=14

-

{2х-3у=6-5+9=10

5х-2у-2х-(-3у)=14-10

3х-2у+3у=4

3х+у=4

у=4-3х

5х-2у=14

5х-2(4-3х)=14

5х-8+6х=14

11х=14+8

11х=22|:11

х=2

у=4-3х

у=4-3×2

у=4-6

у=-2

Ответ: х=2; у=-2

проверка

(2+2)/6-(-2-3)/15=1

(4/6)-(-5/15)=1

2/3+1/3=1

(2+1)/3=1

3/3=1

1=1-истинно!