Solve the following system of equations. You will type your x value in the first part and the y value in the second part of the question. If the answer if no solution then type NS in both parts and if the the answer is infinite solutions then type I in both parts.

Question

x = 0.7(300 - y)

y = 0.8(300 - x)

What is the x value?

Answer 1

just sub one into the other

x = 0.7(300 - y)
x = 0.7(300 - 0.8(300 - x))
x = 0.56x+42
...

once you have x, use either equation to find y.

Answer 2

Solve the following system of equations. You will type your x value in the first part and the y value in the second part of the question. If the answer is no solution then type NS in both parts and if the the answer is infinite solutions then type I in both parts.



5x + 6y = 7

8x + 9y = 10

What is the x value?