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write a system of equations using x and y in each for the following
1.) the sum of two numbers is 170 and their difference is 26
2.)the sum of two numbers is 170 and their difference is 26 , show how to solve this using any method
3.) the sum of two numbers is 170 and their difference is 26 write the solutions as an order pair

Respuesta :

1) x+y = 170
x-y = 26

2) Subtract the two equations from each other. Doing this you get 2y = 56. 
So the value of y is 28. Then plug in the value of y into any of the two equations and solve for x.

x-28 = 26
x = 54

3) When writing solutions as an ordered pair, the x value always comes first followed by the y value. So it would be (54, 28). 

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