Question

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Which expressions are equivalent to 30(1/2 x - 2) +40(3/4 y - 4)

Answer 1

hey mate here we go

$30( \frac{1}{2} x - 2) + 40( \frac{3}{4} y - 4 ) \\ = (\frac{30}{2}x - 60) + ( \frac{120}{4}y - 160) \\ = 15x - 60 + 30y - 160 \\ = 15x + 30y - 220$
=3x+6y-44

I hope this will helps you

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