Răspuns :
Cum nebune?
a-b=132
a=5b+12
si inlocuim
5b+12 - b = 132
4b = 120
b=30
a=132+b=162
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Se verifica: 5*30 + 12 = 150+12=162 OK
a-b = 132
a : b = 5 r 12
a = 5b + 12
5b - b + 12 = 132
4b = 132 - 12
4b = 120
b = 120 : 4 = 30
a = 5 × 30 + 12 = 162
a : b = 5 r 12
a = 5b + 12
5b - b + 12 = 132
4b = 132 - 12
4b = 120
b = 120 : 4 = 30
a = 5 × 30 + 12 = 162