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a fost răspuns

Determinati solutiile ecuatilor: a) 4(x+5)-5(x+3)=x-5 b) 4x+1+2(x-5)=5(x+1)

Răspuns :

4(x+5)-5(x+3)=x-5
4x+20-5x-13=x-5
4x-5x-x=-5-20+13
2x=12
x=12/2
  =6

4x+1+2(x-5)=5(x+1)
4x+1+2x-10=5x+1
4x+2x-5x=1-1+10
1x=10
x=10/1
  =10

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