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13-01-2020
Mathematics

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One number is four more than a second number. Three times the first is 12 less than 2 times the second. Find the numbers

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josshyaby josshyaby

14-01-2020

Answer:

Step-by-step explanation:

Let the number be x

x = 4y.......(1)

3y = 2x - 12.....(2)

Putting (1) into (2)

3y = 2(4y) - 12

3y = 8y - 12

3y - 8y = -12

-5y = -12

y = -12/-5

y = 12/5

y = 2 2/5

And x = 4y

Putting y = 12/5

x = 4 × 12/5

x = 48/5

x = 9 3/5

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