Question

varogggg Rapidddd dau coroana
10h​

Answer 1

Răspuns:

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Explicație pas cu pas:

a) 7x+7y/5x+5y=

=7•(x+y)/5•(x+y)=

=7/5

b) 2x+2y/6x+6y=

=2•(x+y)/6•(x+y)=

=2/6

c) 3x-6y/8y-4x=

=3•(x-2y)/4•(2y-x)=

=-3•(-x+2y)/4•(2y-x)=

=-3•(2y-x)/4•(2y-x)=

=-3/4

d) 4x-8/2y-xy=

=4•(x-2)/y•(2-x)=

=-4•(-x+2)/y•(2-x)=

=-4•(2-x)/y•(2-x)=

=-4/y