one way is to use brute force (find bigger equivilent ratios and add them)
2:3
to make them bigger, we multiply both by the same number
2:3
2+3=5 nope
2:3 times 2 to both=4:6
add
4+6=10
we can just add the numbers before multiplying and then multiply after
2+3=5
5 times what=30
divide both sides by 5
6=what
we need to multiply each by 6
2:3 times 6 to both =12:18
12+18=30
a=12
b=18
