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24-03-2016
Mathematics

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3x+y=17 4x-y=18 how can you order a ladder?

Respuesta :

24-03-2016

3x + y = 17
4x - y = 18

Add both the equations together.

3x + 4x + y - y = 17 + 18
7x = 35
x = 5

Plug in x = 5 into any equation, and solve for y.

3(5) + y = 17
15 + y = 17
y = 2

Your solution is (5,2).

How can you order a ladder?
Call the rung number

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