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Va rog problemaaaaa

Va Rog Problemaaaaa class=

Răspuns :

100-{22-3×[12:(75:a+3)+1]}×5=35
-{22-3×[12:(75:a+3)+1]}×5=35-100
{22-3×[12:(75:a+3)+1]}×5=65
22-3×[12:(75:a+3)+1]=13
-3×[12:(75:a+3)+1]=13-22
3×[12:(75:a+3)+1]=9
12:(75:a+3)+1=3
12:(75:a+3)=3-1
12:(75:a+3)=2
75:a+3=6
75:a=6-3
75:a=3
a=25