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Westkost [7]
3 years ago
7

WILL GIVE BRAINLIEST

Mathematics
1 answer:
Readme [11.4K]3 years ago
3 0

Answer:

(-2, 4)

Step-by-step explanation:

One of the equations is already solved for y, so let's solve the other one for y and by the transitive proprerty of equality, if y = y, then what those y's are equal to are equal to each other.  Solving the first equation for y:

x + y = 2 so

y = -x + 2

Let's fill that in for y in the second equation.  Where

y=\frac{1}{2}x+5, making the substitution,

-x+2=\frac{1}{2}x+5

Combining like terms and getting the x on one side and the constant on the other side of the equals sign:

-\frac{3}{2}x=3

The product of a fraction and its reciprocal is 1 so we will multiply both sides by

-\frac{2}{3} to get:

(-\frac{2}{3})(-\frac{3}{2})x=(3)(-\frac{2}{3})

and we end up with x = -2.

Now that we know that, we can sub that in for x in either one of the original equations.  I chose the first one:

If x + y = 2, then -2 + y = 2

and y = 4

Therefore, the solution set is (-2, 4)

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