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-3x(3x+1)+14=3(7x-3)-10


Răspuns :

-3×(3x+1)+14=3(7x-3)-10

-9x-3+14=21x-9-10

-9x+11=21x-19

21x+9x=11+19

30x=30

X=30:30

X=1

- 3x·(3x + 1) + 14 = 3·(7x - 3) - 10

- 9x - 3x + 14 = 21x - 9 - 10

21x + 9x + 3x = 14 + 9 + 10

33x = 33

x = 1