Which of the following equations has a solution of -1/2?

x-1=-1/2, x+1/2=-1, x-1/2=1, x+1=1/2

1 answer

To determine which of the given equations has a solution of -1/2, we can substitute -1/2 into each equation and check if it satisfies the equation.

  1. Equation: x1=12

    • Substitute x=12: 121=12 1222=32(Not equal to -1/2)
  2. Equation: x+12=1

    • Substitute x=12: 12+12=1 0=1(Not equal to -1)
  3. Equation: x12=1

    • Substitute x=12: 1212=1 1=1(Not equal to 1)
  4. Equation: x+1=12

    • Substitute x=12: 12+1=12 12=12(This is true)

The equation that has a solution of -1/2 is: x+1=12.