KaiDeguzzy1150 KaiDeguzzy1150

15-07-2020
Mathematics

contestada

If the denominator of 5/7 is increased by a number and the numerator is doubled, the result is 1. Find the number.

Respuesta :

jimrgrant1 jimrgrant1

15-07-2020

Answer:

3

Step-by-step explanation:

let n be the number, then

[tex]\frac{10}{7+n}[/tex] = 1 ← multiply both sides by 7 + n

10 = 7 + n ( subtract 7 from both sides )

3 = n

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