Respuesta :

24meganesmith

Answer:

a pair of elements a, b having the property that ( a, b) = (u, v ) if and only if a = u, b = v.

Step-by-step explanation:

Hope this helps ;P

Let's solve your system by substitution.

x+y=8;x−y=4

Step: Solvex+y=8for x:

x+y=8

x+y+−y=8+−y(Add -y to both sides)

x=−y+8

Step: Substitute−y+8forxinx−y=4:

x−y=4

−y+8−y=4

−2y+8=4(Simplify both sides of the equation)

−2y+8+−8=4+−8(Add -8 to both sides)

−2y=−4

−2y/−2=−4/−2 (Divide both sides by -2)

y=2

Step: Substitute2foryinx=−y+8:

x=−y+8

x=−2+8

x=6(Simplify both sides of the equation)

Answer:

x=6 and y=2

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