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Monica [59]
3 years ago
10

1. What is the solution to the system below? x+y=5 1x- y=3

Mathematics
1 answer:
Alika [10]3 years ago
5 0

Answer:

(4,1)

Step-by-step explanation:

x+y=5

x- y=3

Add the equations together to eliminate y

x+y=5

x- y=3

--------------------

2x = 8

Divide each side by 2

2x/2 = 8/2

x = 4

Now we can find y

x+y = 5

4+y = 5

Subtract 4 from each side

4+y-4 = 5-4

y =1

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ie. 1+x = 2

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So we are left with the x on the left side, and a single number on the right side. Therefore, our calculation is complete.

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More complex cases would be

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WE ARE NOT DONE! 2y=48 is still an equation. Therefore, to isolate the y, we need to divide BOTH SIDES by 2

2y/2 = 48/2

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There is no true or absolute or definite value for algebraic symbols like x,y,z,a,c,t,h,d etc. They are used to represent unknown numbers.


Hope this helped!
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Step-by-step explanation:

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It has to be A I’m sorry if I’m wrong
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