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SimonaIngeras23
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[100+100×(a-10)]:100-100=100:10
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Răspuns :

[100+100x(a-10)]:100-100=10
[100+100x(a-10)]:100=10+100=110
100+100x(a-10)=110x100=11000
100x(a-10)=11000-100=10900
a-10=10900:100=109
a=109+10
a=119