aflati vectorul x in functie de vectorii a si b
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Răspuns:
a)3a+2(b-x)=4(2a-b)
3a+2b-2x=8a-4b
3a+2b-8a+4b=2x
-5a+6b=2x
x=-5a/2+6b/2
x= -5a+3b
___________________________
b)2(x-2a)+3(2b-x)=5b-6a
2x-4a+6b-3x=5b-6a
-x=5b-6a+4a-6b
-x=-2a-b║·(-1)
x=2a+b
Explicație pas cu pas: