PLEAS CAN SOMEONE HELP ME WITH THIS Reggie was solving a system of equations. after manipulating them, he decides to add the two equations shown below together to eliminate the variable x. what property justifies this?

please show work :)

6x + 5y = 17
-6x + 2y = 4

thank you to anyone who helps me :)))

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation:

good luck on ur quiz test or homework. have a good day : )

1,2,4,5,10,11,20,22,44,55,110,220