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 16. a)Stiind ca x+y+z+11=43,determinati valoarea lui x+y+z.

b)Daca 3*x+4*y+5*z+27=59,determinati 5*z+3*x+4*y.

c)Stiind ca x-2*y+13=52,determinati 3*x-6*y+1. 

Răspuns :

Miky93ask
a) x+y+z=43-11

x+y+z= 32

b)5z+3x+4y= 59-27

5z+3x+4y=32

c)x -2y =52 -13

x-2y=39

3x-6y+1=  3(x-2y)+1 =3*39+1=  117+1=118

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