To solve this equation, you will need to set up a proportion where you set two fractions equal to each other.
Let x = the unknown amount of milk
You would then crossmultiply and solve for x.
8x = 400(6)
8x = 2400
x = 2400/8
x = 300
You will need 300 mL of milk to make 6 pancakes if you previously needed 400 mL to make 8 pancakes.
The rational expression written using the least common denominator is
.
The ratio of two polynomials is displayed in rational expressions. It indicates that the denominator and numerator are polynomials. It is an algebraic expression that has a ratio and an unknown variable, just like a fraction. Although we can simplify this kind of equation with the aid of a calculator.
Because one is divided by the other, just like a ratio, it is a "rational expression."
The polynomial that we divide by cannot be zero, as a reminder.
The least common denominator for and
is calculated to be
.
Thus, the required rational expression is <em>.</em>
Learn more about rational expressions here:
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