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# how do you solve these using elimination?

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How do you solve these using elimination?

1,000,000 - 25,000x = y

and

600,000 + 10,000x = y

Guest Mar 3, 2017
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#1
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How do you solve these using elimination?

1,000,000 - 25,000x = y

and

600,000 + 10,000x = y

$$1,000,000 - 25,000x = y$$

$$\underline{600,000 \ + 10,000x = y}$$     subtract

.   $$400,000-35,000x=0$$

$$-35,000x=-400,000$$          divide

$$x=11\frac{3}{7}$$

or

$$600,000 + 10,000x = 1,000,000 - 25,000x$$

$$10,000x+25,000x=1,000,000-600,000$$

$$35,000x=400,000$$

$$7x=80$$

$$x=11\frac{3}{7}$$

$$y=600,000 + 10,000x$$

$$y=600,000 + 10,000\times\frac{80}{7}$$

$$y=600,000 + 114,285.7\overline{142857}...$$

$$y= 714,285.7\overline{142857}...$$

!

asinus  Mar 3, 2017

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