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in terms of 5


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4y = -y +5(x-2) -10z

Instead of the more traditional approaches of solving with respect to a variable, solve it with respect to 5. Prove your answer is correct by using substitution with your answer into the number 6.

E.g. since 5 + 5/5 = 6 then

Solution for 5 + solution for 5 ÷ 5

Should equal solution for 5 + 1

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