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Ajutati-ma putin cu astea:
15-7(3-6x)=9(5x-2)
7(3x-4)+19=3(5x-7)
2(11-3x)=16-3(8-3x)
Dau coroana ,inima si 40 puncte..SINCER


Răspuns :

15-7(3-6x)=9(5x-2)
15-21+42x=45x-18
42x-45x=-18+6
-3x=-12
x=12:3
x=4

7(3x-4)+19=3(5x-7)
21x-28+19=15x-21
21x-15x=-21+9
6x=-12
x=-12/6
x=-2

2(11-3x)=16-3(8-3x)
22-6x=16-24+9x
-6x-9x=-8-22
-15x=-30
x=30/15
x=2