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What is the result of adding the system of equations? 2x+y=4 3x-y=6

For the inequality |c| < |d| to be true, which of the following must be true?

Find the percent cost of the total spent on each equipment $36, fees $158, transportation $59 a. 14%, 62%, 23% b. 15%, 60%, 35% c. 10%, 70%, 20% d. 11%, 62%, 27%