add a Number that will make the ratios proportional
3:9 = 10:??
??:8 = 12:2
4:6 = ?:9
?:5 = 70:1
50:30 = ??:6
7:?? = 4:3.5...
5050
x^4+4x^3+6x^2+4x+0.5
21h-42h2
(6 + √2)(5 − √2)
156 index form
2x+60=4x-30
90 in index form
2x+10=3x-10
⅓+¼
