Answer: The solution to the equation 3x + 5 = -x - 7 is x = -3.
Step-by-step explanation:
To solve the equation 3x + 5 = -x - 7 for x, you need to isolate x on one side of the equation. Here's how:
Add x to both sides to eliminate it from the right side of the equation:
3x + x + 5 = -x - x - 7
This simplifies to:
4x + 5 = -7
Now, subtract 5 from both sides to isolate the term with x:
4x + 5 - 5 = -7 - 5
This simplifies to:
4x = -12
Finally, divide both sides by 4 to solve for x:
4x/4 = -12/4
This simplifies to:
x = -3
So, the solution to the equation 3x + 5 = -x - 7 is x = -3.
Answer:
x = - 3
Step-by-step explanation:
given the equation
3x + 5 = - x - 7 ( add x to both sides )
4x + 5 = - 7 ( subtract 5 from both sides )
4x = - 12 ( divide both sides by 4 )
x = - 3
