266:у=14
у=266:14
у=19
266:19=14
6у+47=119
6у=119-47
6у=72
у=72:6
у=12
6*12+47=119
(127-з):4=24
127-з=24*4
127-з=96
з=127-96
з=31
(127-31):4=24
(11z-14)*38=304
11z-14=304:38
11z-14=8
11z=8+14
11z=22
z=22/11
z=2
(11*2-14)*38=304
(7z-93)/48/8=27/12
(7z-93)/384=2.25
7z-93=384*2.25
7z-93=864
7z=864+93
7z=957
z=957/7
z≈136.71
2x+3y-6=0
1) x=3; y=0
2×3+3×0-6=0
6+0-6=0
0=0 — истина
2) x=0; y=2
2×0+3×2-6=0
0+6-6=0
3) x=-1,5; y=3
2×(-1,5)+3×3-6=0
-3+9-6=0
4) x=9; y=-4
2×9+3×(-4)-6=0
18-12-6=0