Question

Rezolvati in multimea numerelor intregi ecuatiile
e) x-7=11
8=-3+x
e) 9=x+23
2x=-16. Va rog un radpuns
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Answer 1

x-7=11

x=11+7

x=18

8=-3+x

-3+x=8

x=8+3

x=11


9=x+23
-x=23-9
-x=14
X= -14

2x=-16

x={-16}/{2}

x=-8