1)2x+3(x+y)=11 2)3*(x+2y)-y=27 7*(x+3y)-6x=-59 4*(x-y)-3x=23

Question

1)2x+3(x+y)=11 2)3*(x+2y)-y=27
7*(x+3y)-6x=-59 4*(x-y)-3x=23

Answer 1

2х+3х+3у=11
5х+3у=11
х=1; у=2

3(х+2у)-у=27
3х+6у-у=27
3х+5у=27
у=3
х=4

7(х+3у)-6х=-59
х+21у=-59
у=-2
х=-17

4(х-у)-3х=23
х-4у=23
у=-5
х=3