(08.05)

2 answers:

Crank3 years ago

7 0

If you use the first answer, the equation becomes 2x + 2y = 16. You could subtract this from equation Q to eliminate x.

The second answer makes equation P -2x - 2y = -16. You could add this to equation Q to eliminate x. You can use both of these methods to eliminate the x term, but if you can only choose one, you should choose the second option.

snow_tiger [21]3 years ago

6 0

Answer is −2(x + y = 8)
cause

−2(x + y = 8) (multiply -2 to 1st equation)
-2x - 2y = - 16
 2x + 5y = 24
--------------------add
0 + 3y = 8 (eliminate x to solve for y)

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