mrangel93 mrangel93

16-05-2017
Mathematics

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solve by substitution method 5x+y=18 and y=4x

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snorlaxventures snorlaxventures

16-05-2017

5x + y = 18

Given y = 4x; substituting y into the first equation:
5x + (4x) = 18

Combine x terms:
9x = 18

Divide by 9 on both sides:
x = 2 .

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