Question 1059335
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One-fourth of a bridge’s length lies on the land to the east of the river and one-sixth of the bridge’s length 
lies on the land to the west of the river.  The river is 840 feet wide.  What is the total length of the bridge?
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I see that solving single linear equation is too difficult for you.

OK, I will do everything from the beginning to the end.


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Let x be the length of the bridge.

Then the equation is


{{{x - x/4 - x/6}}} = 840.


{{{(12x - 3x - 2x)/12}}} = 840,


{{{(7x)/12}}} = 840,


x = {{{(840*12)/7}}} = 120*12 = 1440.

<U>Answer</U>. The bridge is 1440 ft long.
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