Final answer:
Solving 3x - 7 = -5 is different from solving 3x + 7 = -5, as they involve different operations with the number 7. To solve 3x - 7 = -5, add 7 to both sides and then divide by 3. To solve 3x + 7 = -5, subtract 7 from both sides and then divide by 3.
Step-by-step explanation:
Solving the equation 3x - 7 = -5 is different from solving the equation 3x + 7 = -5 because in the first equation, you are subtracting 7 from 3x, while in the second equation, you are adding 7 to 3x.
To solve 3x - 7 = -5, you would first add 7 to both sides of the equation to isolate the variable 'x'. This would give you 3x = 2. Then, divide both sides of the equation by 3 to solve for 'x', which gives you x = 2/3.
On the other hand, to solve 3x + 7 = -5, you would subtract 7 from both sides of the equation to isolate the variable 'x'. This would give you 3x = -12. Then, divide both sides of the equation by 3 to solve for 'x', which gives you x = -4.