Hello there!
5x + 10 = -7
To solve this equation, we should start by substracting 10 from both sides.
5x + 10 - 10 = -7 - 10
Remember, when we have two negative signs, we add them and we keep the negative sign
thus,
5x = -17
Then divide both sides by 5
5x/5 = -17/5
x = -17/5
Sorry for the late reply, I had to go do something else as I was typing the answer.