Maths, we use the cross multiplication method for solving linear equations in two variables. ... This is the simplest method to solve them and gives us the accurate value of the two variables.
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 lines resembling a heart outline can be drawn to remember which things to multiply together.
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Answer:
Maths, we use the cross multiplication method for solving linear equations in two variables. ... This is the simplest method to solve them and gives us the accurate value of the two variables.
Answer:
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 lines resembling a heart outline can be drawn to remember which things to multiply together.
Given an equation like
{\displaystyle {\frac {a}{b}}={\frac {c}{d}},}{\displaystyle {\frac {a}{b}}={\frac {c}{d}},}
where b and d are not zero, one can cross-multiply to get
{\displaystyle ad=bc\quad {\text{or}}\quad a={\frac {bc}{d}}.}{\displaystyle ad=bc\quad {\text{or}}\quad a={\frac {bc}{d}}.}
In Euclidean geometry the same calculation can be achieved by considering the ratios as those of similar triangles.