Question

If a number is added to the numerator of 3/4 and twice as much is added to the denominator, the result is 4/7. Find the number.

Answer 1

5

Explanation:

`(3+x)/(4+2x)=(4)/(7) \\\\\\(7(3+x))/(4+2x)=4 \\\\\\7(3+x)=4(4+2x) \\\\\\21+7x=16+8x \\\\\\21=x+16 \\\\\\x=5`

Hope this helps!