Let's call the unknown number x.
We want for what number(s) is x + 2x > x -1 true.
x + 2x > x -1
Combine like terms:
3x > x - 1
Subtract x from each side:
2x > -1
Divide each side by 2:
x > -1/2
Any number greater than -1/2 will work.
Let the unknown number be x and so the expression is: 2x-3
Nine less than twice a number equals the same number increased by four?
2x + 7 = 15 Subtract 7 from both sides: 2x = 8 Divide both sides by 2: x = 4
2n - 8 < 5n + 10 -3n < 18 n < -6
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.
twice an unknown number less one and one-half times the same number equals two ---- Let the unknown number be "x":: Equation: 2x - (3/2)x = 2
Let the unknown number be x and so the expression is: 2x-3
As an algebraic expression this is written 2x - 12, where x is the unknown number.
Nine less than twice a number equals the same number increased by four?
Let the unknown number be x and so the algebraic expression is: 2x -13
2x + 7 = 15 Subtract 7 from both sides: 2x = 8 Divide both sides by 2: x = 4
Let the number be x Twice a number means 2x 7 less than twice a number means 2x-7
Let the unknown number be x: x-4 = 2x -4 = 2x-x -4 = x So the number is -4
2n - 8 < 5n + 10 -3n < 18 n < -6
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.
x + x - 3 = 2x - 3
If the number is 'z', then five less than twice the number is ( 2z - 5 ).