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a fost răspuns

REZOLVATI IN Z ECUATIILE
b) 5(x+3)=2(5x-5)
c) 2(4x+1)=2(5x-7)

Răspuns :

Lidim
b) 5x+15=10x-10
10x-5x=15-10
5x=5=> x=1
c) 8x+2= 10x-14
10x-8x=2+14
2x=16=> x=8