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LeStry
a fost răspuns

69426-435:[363:3-(bx2+6x4)]+12345:5=71890.Afla-l pe "b"

Răspuns :

Rapunzel15
69426-435:[121-(2b+24)]+2469=71890
69426+2469-435:[121-(2b+24)]=71890
435:[121-(2b+24)]=71895-71890
121-(2b+24)=435:5
2b+24=121-87
2b+24=34
2b=34-24
2b=10
b=10:2
b=5

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