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a fost răspuns

Calculate
15+ 24:3-(72:9 + 4) =
21:7 +(18:3+5.6+3) =
14:2 +(14:7 +6-8)=
(21+4.8) + (15-63:9).
90 - (42:6 +56:8+3) =​

Răspuns :

a) 15+24:3-(72:9+4)=15+8-(8+4)=15+8-12=11;

b) 21:7+(18:3+5.6+3)=3+(6+5.6+3)=3+14.6=17.6;

c) 14:2+(14:7+6-8)=7+(2+6-8)=7;

d) (21+4.8)+(15-63:9)=25.8+(15-7)=25.8+8=33.8;

e) 90-(42:6+56:8+3)=90-(7+7+3)=90-17=73;

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