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Equation P: x+y=8 Equation Q: 2x+5y=24 Which of the following steps can be used to eliminate the x term? A) 2(x+y=8) B) -2(x+y=8) C) -1(2x+5y=24) D) -2(2x+5y=24



Answer :

Giovi
Step B) so you get:
-2x-2y=-16
2x+5y=24
adding the two together you get:
0+3y=8
giving: y=8/3
and substituting back in the original first equation:
x+8/3=8 so that x=16/3

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