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Rezolvati in r ecuatile:
a)4x-3(2x+4)=x-(2x-7)


Răspuns :

4x-3(2x+4)=x-(2x-7)
4x-6x-12=x-2x+7
-2x-12=-x+7
-2x+x=7+12
-x=19
x=-19
4x-6x-12 =x-2x+7
-2x-12=-x+7
-2x+x=7+12
-x=19
x=-19