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Ilincadiana
a fost răspuns

stiind ca X-2xY+13=52,determinati 3xX-6xZ+1

Răspuns :

x-2xy+13=52
x-2y=52-13
x-2y=39
x=2y+39
3xx-6xy+1=3x-6y+1=3x(x-2y)+1=3x39+1=117+1=118.
x-2xy+13=52
x-2y=52-13
x-2y=39
x=2y+39
3xy-6xy+1=3x-6y+1=3x(x-2y)+1=117+1 =118

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