50-4(2+2у)=18
50-8-8y=18
42-8y=18
-8y=18-42
-8y=-24
y=24:8
y=3
ответ: 3
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50-4(2+2у)=18
50-8-8y=18
42-8y=18
-8y=18-42
-8y=-24
y=24:8
y=3
ответ: 3
50-8-8у=18
42-8у=18
-8у=18-42
-8у=-24
у=3