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5x-6-3(x+4)=(x-5)-7​

Răspuns :

Răspuns:

[tex]5x - 6 - 3( \times + 4) = (x - 5) - 7 \\ 5x - 6 - 3x - 12 = (x - 5) - 7 \\ 2x - 18 = (x - 5) - 7 \\ 2x - 18 - x + 5 + 7 = 0\\ x - 13 + 7 = 0\\ x - 6 = 0 \\ = > x = 6[/tex]

Răspuns:

5x-6-3(x+4)=(x-5)-7

5x-6-3x-12=x-5-7

2x-18=x-12

2x-x=-12+18

x=6