Oanamariafilip2007ask
a fost răspuns

-5(x-3) + 7 = 2 resolva ecuatia dau coroana​

Răspuns :

-5(x-3)+7=2

-5x+15=-5

-5x=-20

-x=-4

x=4

Andreea3684ask

Varianta 1:

-5(x-3)=2-7

-5(x-3)= -5

x-3= -5÷(-5)

x-3=1

x=1+3

x=4

Varianta 2:

-5*x-(-5)*3=2-7

-5x-(-15)= -5

-5x+15= -5

-5x= -5-15

-5x= -20

x= -20÷(-5)

x=4

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