y=3x. 4y + 2x = 140. Find x

sahall | 11:44 Fri 04th Apr 2008 | Science

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x is 10

y=3x

So 4y=12x

So 12x+2x=14x=140

So x=10

You have y so swap it for the 3x
ie 4(3x) + 2x = 140
Do the arithmetic yourself.

the answer is 10

Are you six years old?

That is the most simple question I have ever seen posted here.

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