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Mathematics, 19.04.2021 14:00 dennisedemirovic20

If y = 4x, x = 2z, and z = 3a, what is the value of y - x in terms of a? A) -20a
B) -18a
C) 6a
D) 18a
E) 20a
With steps please

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If y = 4x, x = 2z, and z = 3a, what is the value of y - x in terms of a? A) -20a
B) -18a

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