anonymous
  • anonymous
The system of equations is coincident. What are the missing values? 3x + y = 7 9x +___ y=____
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
@0487308
0487308
  • 0487308
Did the question tell you the solutions to x and y?
anonymous
  • anonymous
nope

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More answers

lightn1ng
  • lightn1ng
How did they get 9x from 7?
anonymous
  • anonymous
idk bruh
0487308
  • 0487308
9x + 3y = 21
0487308
  • 0487308
That is the solution.
anonymous
  • anonymous
so my first answer is 21
0487308
  • 0487308
The blanks in order are 3 and 21.
lightn1ng
  • lightn1ng
where did you get 21 from?
anonymous
  • anonymous
yea how
anonymous
  • anonymous
wait is it 9x+3 and y= 21
0487308
  • 0487308
You can add matching coefficients with every term of a polynomial, as long as they ae proportional.
0487308
  • 0487308
Basically, 9x = 3(3x), so I multiplied every other term by three to make the two equations coincident.
0487308
  • 0487308
Do you get it now?
anonymous
  • anonymous
OO thanks
0487308
  • 0487308
No problem, and by the way, it is 9x + 3y = 21, not 9x+3 and y = 21
0487308
  • 0487308
Any other problems you have you can tag me in ;)

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