How to use the fraction function from mathjs

orderbook.js

GitHub: hollaex/hollaex-kit

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const roundNumber = (number = 0, decimals = 4) => {
    if (number === 0 || number === Infinity || isNaN(number)) {
        return 0;
    } else if (decimals > 0) {
        const multipliedNumber = math.multiply(
            math.fraction(number),
            math.pow(10, decimals)
        );
        const dividedNumber = math.divide(
            math.floor(multipliedNumber),

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MathProblems.js

GitHub: vvelediaz/math-worksheet-generator

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    }catch (error){
        xSolution = "error"
    }


}while(xSolution === "error" || fraction(xSolution).n > fraction(xSolution).d || fraction(ySolution).n > fraction(ySolution).d || fraction(xSolution).n > maxNum/5 || fraction(xSolution).d > maxNum/5 || fraction(ySolution).n > maxNum/5 || fraction(ySolution).d > maxNum/5)

if(getRandomNum(0,1) === 1){
    expressionShown1 = isolated1
}else expressionShown1 = problem1.expression

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+ 13 other calls in file

operator.js

GitHub: AlexKliger/mathomizer

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#getAnswer() {
    let answer
    // Apply appropriate math operation.
    // Numbers converted to fractions to prevent JS floating point errors.
    const valueL = math.fraction(this.leftNum.value)
    const valueR = math.fraction(this.rightNum.value)
    if (this instanceof Plus) {
        answer = math.add(valueL, valueR)
    } else if (this instanceof Minus) {
        answer = math.subtract(valueL, valueR)

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+ 2 other calls in file