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ad-work [718]
3 years ago
11

What is -3x-3y=3 y=-5x-17 for substitution please show steps

Mathematics
2 answers:
Snowcat [4.5K]3 years ago
5 0
Take -5x + 3x = -2x

because there is a -3x and a 3x they cancel each other out.

and the -17 is left

-2x = -17

divide -2 by -17 = 8.5
Lyrx [107]3 years ago
5 0
-3x-3(-5x-17)=3
-3x+15x+51=3
12x=48
x=3

If y is equivalent to an equation you can substitute that equation in for the y variable in the other equation bc they have the same value. Which it what I did.
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The equivalent sets are <u>X n Y = { } and X U Y= {5, 6, 7,8, 9, 10, 12 ,14}</u>

<h3>Set theory and notation</h3>

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