cross-multiply
What you do with ratios
Cross-multiply is a technique for solving equations with fractions on both sides: multiply the numerator of each fraction by the denominator of the other.
If a/b = c/d, cross-multiplying gives ad = bc.
The method eliminates fractions, making the equation easier to solve.
Cross-multiply and solve for x.
Parts expressed numerically
- denominatorFraction's bottom number
- numeratorNumber being divided
- diagonalSlanting line or path
- equationMathematical equality assertion
solve · proportion · ratio · equivalence · cancel · product · equality · opposite
Prone to fluctuation
- equationMathematical equality assertion
- unknownNot yet discovered
- isolateSeparate from others
- coefficientNumber multiplying a variable
expression · simplify · terms · manipulate · rearrange · linear · quadratic · polynomial
Comparative numerical relation
- proportionComparative relation of parts
- equivalenceState of being equal
- scaleMeasure of relative size
- fractionPart divided by whole
relationship · proportional · scaling · comparison · similar · corresponding · rate · constant
fractions
Parts expressed numerically
- denominatorFraction's bottom number
- numeratorNumber being divided
- diagonalSlanting line or path
equation · solve · proportion · ratio · equivalence · cancel · product · equality · opposite · sides
variable
Prone to fluctuation
coefficient · expression · simplify · terms · manipulate · rearrange · linear · quadratic · polynomial · factor
ratio
Comparative numerical relation
- proportionComparative relation of parts
- equivalenceState of being equal
- scaleMeasure of relative size
fraction · relationship · proportional · scaling · comparison · similar · corresponding · rate · constant
- math operationsaddition, adding, subtraction, subtracting, division
- math verbsadd, adds, subtract, subtracts, divide
cross, multiply, crossed, crossing, crosses, crosser, multiplied, multiplying, multiplies