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Ex 2 dau coronita!!!

Ex 2 Dau Coronita class=

Răspuns :

{45363-[536+9×43-(2×b+48-10)]}-484×78=7608
{45363-[536+387-(2×b+48-10)]}-37752=7608/+37752
45363[536+387-(2×b+48-10)]=45360
45363-4560
536+387-(2×b+48-10)=3
923-(2×b+48-10)=3
923-3=920
2×b+40-10=920/+10
2×b+40=930/-48
2×b=882/:2
b=441