Question

afla termenul necunoscut 45+a =78 69+b=90 32+c=67 55-a=21 72-b=31 87-c=52 a-15=88 b-35=24

Answer 1

45+a=78 <=> a=33

69+b=90 <=> b=21

32+c=67 <=> c=34

55-a=21 <=> a=34

72-b=31 <=> b=41

87-c=52 <=> c=34

a-15=88 <=> a=103

b-35=25 <=> b=60