Solve the equation using addition or subtraction. Check your answer. -5 + x = 7
To solve the equation -5 + x = 7 using addition or subtraction, we need to isolate the variable x on one side of the equation.
First, let's add 5 to both sides to get rid of the -5 on the left side:
-5 + x + 5 = 7 + 5
This simplifies to:
x = 12
To check our answer, we substitute x=12 back into the original equation:
-5 + 12 = 7
-5 + 12 = 7 is indeed true, so our solution x=12 is correct.
To solve the equation -5 + x = 7 using addition or subtraction, we need to isolate the variable "x".
Step 1: Start with the original equation: -5 + x = 7.
Step 2: To get rid of the "-5" on the left side of the equation, we can use addition. If we add 5 to both sides, it will cancel out on the left side of the equation:
-5 + 5 + x = 7 + 5.
Simplifying, we get x = 12.
Step 3: Finally, we need to check if our answer is correct. We substitute x = 12 back into the original equation:
-5 + 12 = 7.
Simplifying, we get 7 = 7.
Since both sides of the equation are equal, our answer x = 12 is correct.
Therefore, the solution to the equation -5 + x = 7 is x = 12.