Question

DAU COROANĂ!!EX 2!!! URGENTTTTTT!

Answer 1

5+8=18 x5
25+12=62
_________
25+40=90 25-25=0. 40-12=28. 90-62=28
25+12=62
_________
0 28 28

28pretul ÷ cu 28covrivi =1

proba: 8×1=8 18-8=10 10÷5=2
25×2=50 12×1=12 50+12=62

1covric 1leu
1chile 2leu

Answer 2

5ch + 8c = 18             | * 5
25ch + 12c = 62

25ch + 40c = 90
25ch + 12c = 62
le scadem
    /       28c = 28
c = 28 : 28
c = 1 leu covrigul
5ch + 8 * 1 = 18
5c = 18 - 8
ch = 10 : 5
ch = 2 lei chifla