Question

3 is 4 rapid dau coroanda ​

Answer 1

Răspuns:

3. (54+23)×7=(54+23)×7

77×7=54×7+23×7

539=378+ 161

539=539

2×(100+55)=2×(100+55)

2×155=2×100+2×55

310=200+110

310=310

87×(2+4)=87×(2+4)

87×6=87×2+87×4

522=174+348

522=522

9×(518+287)=9×(518+287)

9×805=9×518+9×287

7245=4662+2583

7245=7245

4.

(15×7)+(175×8)=105+1400=1505stilouri

Explicație pas cu pas:

sper ca te-am ajutat!Spor la teme!!