SOLUTION: 2x-3y =18 and 5x +3y =3
solutions ( 3 ,-4) dont understand how my book got the solution 3 need a full break down
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-> SOLUTION: 2x-3y =18 and 5x +3y =3
solutions ( 3 ,-4) dont understand how my book got the solution 3 need a full break down
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solutions ( 3 ,-4) dont understand how my book got the solution 3 need a full break down Found 4 solutions by MathLover1, stanbon, uday1435, josmiceli:Answer by MathLover1(20849) (Show Source):
You can put this solution on YOUR website! …..(1) ……(2)…..add (1) and (2) to eliminate and solve for …..(1) ……(2)…..
________________________ ……plug it in (1) and find …..(1)
You can put this solution on YOUR website! 2x-3y =18
5x +3y =3
---------
Add to solve for "x":
7x = 21
x = 3
---------
Substitute into 5x + 3y = 3 to solve for "y":
5*3 + 3y = 3
15 + 3y = 3
3y = -12
y = -4
------------
Solution: (3,-4)
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Cheers
Stan H.
You can put this solution on YOUR website! 2x - 3y = 18
5x + 3y = 3
------------ Adding these eqns we get
7x = 21
Dividing both sides by 7 we get
x = 21/7 = 3
Substitutig the value of x in the first equation we get
2(3) - 3y = 18
6 - 3y = 18 subtracting 6 from both sides of this equation we have
- 3y = 18 - 6 = 12 Dividig both sides by - 3 we get
- 3y / (-3) = 12/ (-3)
y = - 4
so x = 3 and y = -4 are the solution
If you still require further clarifications please write to udayakumar.t.r@gmail.com
You can put this solution on YOUR website!
Just add these together
Then substitute this back into
either equation
Add to both sides
Subtract from both sides
The answer is (3,-4)
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