Friday

April 25, 2014

April 25, 2014

Posted by **mag** on Monday, April 29, 2013 at 7:25pm.

10 - 0.5y = 1.5x and y = 0.5(6x + 40)

- algebra -
**Henry**, Tuesday, April 30, 2013 at 8:02pm10 - 0.5y = 1.5x

-1.5x - 0.5y = -10

Multiply both sides by -2:

Eq1: 3x + y = 20

y = 0.5(6x+40)

y = 3x + 20

Eq2: -3x + y = 20

Add Eq1 and Eq2:

2y = 40

Y = 20

In Eq1. replace y with 20:

3x + 20 = 20

3x = 20-20 = 0

X = 0.

Solution Set: (x,Y) = (0,20).

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