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Sagot :
The value of x and y for the first set of equations is -2 and 2 respectively, while the value of x and y for the next set of equations is 4 and 5 respectively.
We have equations
-x + y = 4 [1]
x + 3y = 4 [2]
Here we see that we can eliminate x by simply adding [1] and [2] up
we get
4y = 8
or, y = 2
Putting this equation [1] we get
-x + 2 = 4
or, -x = 2
or, x = -2
The next set of equations is
5x+6y=50 [3]
x−6y=−26 [4]
here we can eliminate y. hence we get
6x = 24
or, x = 4
putting this value in equation [3] we get
4 - 6y = -26
or, 6y = 4 + 26
or, y = 30/6
or, y = 5
To know more about simultaneous equations visit
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