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Rezolvati in multimea Z ecuatiile : a) 1-3(-2x+5)=2(x-3) b) 41-23(-6x-15)=5(x+1)

Răspuns :

1+6x-15=2x-6
6x-2x=15-6-1
4x=8
x=2

41+138x+345=5x+5
138x-5x=5-345-41
133x=-381
x=381/133