3 years ago

2x - 4y = 20 x =4 a. 4, -2 b. 4, 3 c. 4, 4 d. 4, -3

1 answer:

4 0

D. 4, -3 Because you plug in 4 for the x and 2•4 is 8, then you subtract 8 from both sides of the equal sign. (20-8=12) then you’re left with -4y = 12 divide by -4 on both sides of the equal sign, and y= -3 (and you’re already given the value of x)

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