Question

7/8-1/x=3/4 find x

would x be 4?

Answer 1

\[\frac{ 7 }{ 8 } - \frac{ 1 }{ x } = \frac{ 3 }{ 4 }\]

Answer 2

\[\frac{ 7 }{ 8}-\frac{ 1 }{ x}=\frac{ 3}{ 4 }\]
First, let's make the denominators (other than x) the same;
\[4\times2=8\]
So what you do to the denominator you do to the numerator;
\[3\times2=6\]
Which makes it;
\[\frac{ 7 }{ 8 }-\frac{ 1 }{ x }=\frac{ 6 }{ 8 }\]
So, for this to be true, 7-1=6, but for that to happen the denominators have to be the same, which would mean;
\[x=8\]