The Sears Tower in Chicago is 40 feet taller than the Empire State Building in New York. The sum of their heights is 2868 feet. How tall is the Empire State Building?
X + 40 = 2868
B X-40 = 2868
2x + 40 = 2868
D 2x - 40 =2868

C. 2x + 40 = 2868

Step-by-step explanation:

In this equation, x is the height of the Empire State Building.

If Sears Tower is 40 feet taller than x, and the sum of their heights is 2868, what we have to do to find x is subtract 40 from 2868, then divide by 2.

This is the same as multiplying x by 2, then adding 40 (just backwards).

Let me demonstrate..

2868 - 40 = 2828

2828 / 2 = 1414

x = 1414

Now let's try the other way..

2x + 40 = 2868

Let x = 1414

2 x 1414 = 2828

2828 + 40 = 2868

And there's your answer again!

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step-by-step explanation: im watching dbz and eating popcorn leave meh alone