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 solutia ecuatiei 7x-4(x+3)=5(x-2)-17+x


Răspuns :

Desfacem parantezele: 7x-4x-3=5x-10-17+x
3x-3=6x-27 | +3
3x=6x-24 | -3x
0=3x-24 => 3x=24 => x=8
7x-4x-12=5x-10-17+x
3x-12=6x-27
3x-6x=12-27
-3x=-15
x=-15/3
x=-5