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2.Efectuati:(18:2+100:10)-4×7=​

Răspuns :

( 18 : 2 + 100 : 10 ) - 4 × 4 =

= ( 9 + 10 ) - 16

= 19 - 16

= 3

(18:2+100:10)-4*4
(9+10)-4*4
19-4*4
19-16
=3