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Ceausurazvanel
a fost răspuns

(z-16):5=10
(88-z)*2=16
(13+z)-40=22
(10+z)*5=50

Răspuns :

Delf
(z-16):5=10; (z-16)=10x5; z-16=50; z=50+16; z=66
(88-z)x2=16; (88-z)=16:2; 88-z=8; z=88-8; z=80
(13+z)-40=22; 13+z=22+40; 13+z=62; z=62-13; z=49
(10+z)x5=50; (10+z)=50:5; 10+z=10; z=10-10; z=0

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