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4x+1+2(x-5)=5(x+1),2(x+3)-3(2x+1)=8(2x-1)-9

Răspuns :

4x+1+2x-10=5x+5
6x-9=5x+5
6x-5x=5+9
x=14

2x+6-6x-3=16x-8-9
-4x+3=16x-17
-4x-16x=-17-3
-20x=-20
x= 1
a) 4x+1+2(x-5)=5(x+1)
4x+1+2x-10=5x+5
4x+2x-5x=5-1+10
x=14