anabear65 anabear65

20-01-2021
Mathematics

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three times the sum of a number x and 3 is 10 plus twice the difference of the number x and another number y

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ChoiSungHyun ChoiSungHyun

20-01-2021

Step-by-step explanation:

We have 3(x + 3) = 10 + 2(x - y).

=> 3x + 9 = 10 + 2x - y

=> x = 1 - y

=> y = 1 - x.

(Rewritting it as a mathematical statement is the 1st line)

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