21
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Expressed as an equation, this would be equal to 13x - 3.
13 less than 4 times a number 13 less than is "-13" 4 times a number is "4x" 4x-13■
16 is greater than 13 but negative 16 or -16 is less than negative 13 or -13. The larger the negative number the smaller is its value..
Let the unknown number be x: 4x-7 = 13 Moving -7 to the other side of the equation changes it to +7: 4x = 13+7 4x = 20 Divide both sides of the equation by 4 to find the value of x: x = 5
13n - 3