Question

What number is to be added to each of the numbers 2,3,5&7 in order to get these numbers in proportion

Answer 1

Answer:

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Answer 2

Answer:

1

Step-by-step explanation:

$(2 + x):(3 + x)::(5 + x):(7 + x) \\ \frac{2 + x}{3 + x} = \frac{5 + x}{7 + x} \\ (2 + x)(7 + x) = (3 + x)(5 + x) \\ 14 + 9x + {x}^{2} = 15 + 8x + {x}^{2} \\ x = 1$

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