1,-10+х+х=-26
2,10у-3у-9=40
3,-у+8-14у=23
2х=-26+10
2х=-16
х=-16:2
х=-8
7у=40+9
7у=49
у=49:7
у=7
-15у=23-8
-15у=15
у=15:(-15)
у=-1
1) =х+х=10-26=-16
2)=10y-3y=40-9=4.428
3) =-y-14y=23-8= 15y=15=-1
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2х=-26+10
2х=-16
х=-16:2
х=-8
7у=40+9
7у=49
у=49:7
у=7
-15у=23-8
-15у=15
у=15:(-15)
у=-1
1) =х+х=10-26=-16
2)=10y-3y=40-9=4.428
3) =-y-14y=23-8= 15y=15=-1