1.y-3,5=0.5
y=0.5+3.5
y=4
проверка:4-3.5=0.5
2.-6+Z=0
Z=0+6
Z=6
Проверка: -6+6=0
3.Z/5+3=-7
Z/5=-7-3
Z=-10×5
Z= -50
Проверка: -50/5+3=-7
4. 2.8-a=-2.8
-a=-2.8-2.8
-a=-5.6
a=5.6
проверка:2.8-5.6=-2.8
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Answers & Comments
1.y-3,5=0.5
y=0.5+3.5
y=4
проверка:4-3.5=0.5
2.-6+Z=0
Z=0+6
Z=6
Проверка: -6+6=0
3.Z/5+3=-7
Z/5=-7-3
Z=-10×5
Z= -50
Проверка: -50/5+3=-7
4. 2.8-a=-2.8
-a=-2.8-2.8
-a=-5.6
a=5.6
проверка:2.8-5.6=-2.8