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3 years ago

X:y=5:3 and x+y=56 work out the value of x-y

Mathematics

1 answer:

Vladimir79 [104]3 years ago

6 0

x - y = 14

given the ratio x : y = 5 : 3

then let x = 5x and y = 3x, hence equation can be expressed as

5x + 3x = 56

8x = 56 ( divide both sides by 8 )

x = 7

Hence x = 5 × 7 = 35 and y = 3 × 7 = 21

Thus x - y = 35 - 21 = 14

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2 years ago

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Missing term = –2xy

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Let us first find the quotient of $-8x^2y^3 \div xy$ .

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