What property is 4+(x+y)=(4+x)+y

Question

Mathematics: What property is 4+(x+y)=(4+x)+y

aysenazz · Accepted Answer

h = -9/10 & j = -7/2

Step-by-step explanation:

This what i get :

5h-j=-1

3j-5h=-6

5h-j=-1

-j=-5h-1

J= -5h/-1+ -1/-1

J= 5h +1

Now sub substitute second equation

3j-5h=-6

3(5h+1)-5h=-6

15h+3-5h=-6

15h-5h+3=-6

10h+3=-6

10h= -6-3

10h= -9

H=-9/10

5(-9/10)-j =-1

-4.5-j=-1

-j=-1+4.5

-j=3.5

J=3.5/-1

J= -7/2

Hmmm

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