Cross multiplication
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Meghna Thapar 5 years, 1 month ago
In mathematics, cross multiplication is a process where a variable in an equation is determined by cross multiplying two fractions or expressions. Cross multiplication can be applied also compare fractions by multiplying the numerator of each fraction by the other's denominator.
In mathematics, specifically in elementary arithmetic and elementary algebra, given an equation between two fractions or rational expressions, one can cross-multiply to simplify the equation or determine the value of a variable.
The method is also occasionally known as the "cross your heart" method because a heart can be drawn to remember which things to multiply together and the lines resemble a heart outline.
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