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28-05-2018
Mathematics

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4x = 18-y, if x=2 and y=6

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29-05-2018

if you're using substitution, solve for the first variable in one of the equations, then substitute the result into another equation. your answer is no solution:

x = 2 ; y = 6

4x = 18 - y
4 (2) = 18 - 6
8 = 12

8 does not equal 12, there is no solution

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