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a fost răspuns

REZOLVA IN DOUA MODURI.
15*42 + 15 * 18=
43*62- 35 *62=
23 * 342 - 23 * 172=​

Răspuns :

Daniel201793

Răspuns:

1)15×42+15×18=

15×42=630

15×18=270

630+270=900

2)15×(42+18)=15×60=900

43×62-35×62=496

1)43×62=2 666

35×62=2 170

2 666-2 170=496

2)62×(43-35)=62×8=496

23×242-23×172=

1)23×242= 5 566

23×172=3 956

5 566-3956=1 610

2)23×(242-172)=23×70=1 610