Question

afla numerele necunoscute,folosind proba adunarii si proba scaderii.a×32=61,)×-35=29),81-×=37​

Answer 1

Explicație pas cu pas:

×+32=61

x=61-32

x=29

proba:

29+32=61

61-29=32

x-35=29

x=29+35

x=64

proba:

64-35=29

29+35=64

81-x=37

x=81-37

x=44

proba:

81-44=37

37+44=81