I'm assuming the ratio is 6:7.
The easiest way to find equivalent ratios is to multiply both sides by the same number.
We'll use 2 and 3.
6x2=12
7x2=14
the new, equivalent ratio is 12:14
6x3=18
7x3=21
and the equivalent ratio is 18:21
so, your quick, easy equivalent ratios to 6:7 (also written as 6/7) are
12:14 (12/14)
and
18:21 (18/21)