Which of the following equations has a solution of -2?
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1 point
7 + x = 5
3x = -12
-6 - x = 20
8 = 3 - x
Solve the following equatio
To find the equation that has a solution of -2, we need to substitute -2 for the variable in each equation and see if it is true.
1) 7 + x = 5
Substituting -2 for x: 7 + (-2) = 5
Simplifying: 7 - 2 = 5
This equation does not hold true, so -2 is not a solution for this equation.
2) 3x = -12
Substituting -2 for x: 3(-2) = -12
Simplifying: -6 = -12
This equation does not hold true, so -2 is not a solution for this equation.
3) -6 - x = 20
Substituting -2 for x: -6 - (-2) = 20
Simplifying: -6 + 2 = 20
This equation does not hold true, so -2 is not a solution for this equation.
4) 8 = 3 - x
Substituting -2 for x: 8 = 3 - (-2)
Simplifying: 8 = 3 + 2
Simplifying further: 8 = 5
This equation does not hold true, so -2 is not a solution for this equation.
None of the given equations have a solution of -2.