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Ciobotarumaria057
a fost răspuns

7x-3(5x+2)=4
(7x-5x)+3+2=4
2x=5+4
2x=9
X=9-2
X=7​

Răspuns :

Matemovici

7x-3(5x+2)=4

7x-3*5x-3*2=4

7x-15x-6=4

-8x=10

x=-10/8 = -5/4