2 x 20 = 40
sum - means addition less - means subtraction twice - means multiply by 2
X = number. 4X + 9 = 2X - 15 ===========
2x - 4 = 6x -4 = 4x x = -1
Let the unknown number be x: x-4 = 2x -4 = 2x-x -4 = x So the number is -4
2n - 2
20
Nine less than twice a number equals the same number increased by four?
the quotient of twice a number and six is.... 2x/6 four less than three times the same number is .... 3x-4 So the equation would be 2x/6=3x-4
Let the number be x Twice a number means 2x 7 less than twice a number means 2x-7
sum - means addition less - means subtraction twice - means multiply by 2
If the number is n then twice the number is 2n and 7 less than twice the number is 2n - 7This could also be a boolean variable based on another variable. If the number is less than or equal to 3.5, the variable is false. Otherwise, it is true.
If the number is 'z', then five less than twice the number is ( 2z - 5 ).
One less than twice a number = (X times 2) minus 1, (where X = your number of choice).
X = number. 4X + 9 = 2X - 15 ===========
This forms an equation which solves nicely: 2x-7 = x-1 x-7 = -1 x = 6
2x - 4 = 6x -4 = 4x x = -1
It is when the number is -5. I'm so smart.