20 to 90
Convert the ratio to a fraction by making the left side of the ratio the numerator and the right side the denominator.
2090
Factor 10 out of 20.
10(2)90
Cancel the common factors.
Factor 10 out of 90.
10⋅210⋅9
Cancel the common factor.
10⋅210⋅9
Rewrite the expression.
29
29
29
Convert to a Fraction 20 to 90