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va rog ajutama urgent dau coronita10 11 12 13

Va Rog Ajutama Urgent Dau Coronita10 11 12 13 class=

Răspuns :

la exercitiul 10 toate sunt F (false)

10.9×8+1×8-5×8<(9+1-5)×8 F
6×(7-2+4)>6×7-6×2+6×4 F
6×(7-2)<6×5
11. 7×8-3×8=56-24
=32
12. 3×9+5×9+4×9=108
9×(3+5+4)=108
13. 27=3×4+3×5,3×(4+5),3×9.
14=2×7,2×(2+5),1×2+2×5
90=9×10,9×1+9×9,9×(9+1).