Question

2x + 7 = -15
can yall do a step by step explanation pls of how to find x

Answer 1

-11

Explanation:

The key to this is to work backwards

You start with -15, and you know that you're adding 7 to get -15

So you take the 7 out of the equation by subtracting it from -15

-15 - 7 = -22

Now your new equation is:

2x = -22

2 times what equals 22? 11 right?

So 2 times -11 would equal -22

Which means that...

x = -11

Hope this helps! :)

Answer 2

Here's a step-by-step explanation of how to find x in the equation 2x + 7 = -15:

First, we want to isolate the variable (x) on one side of the equation. To do this, we need to get rid of the constant (7) on the same side as x.

To cancel out the 7, we need to subtract 7 from both sides of the equation. This gives us:

2x + 7 - 7 = -15 - 7

Simplifying, we get:

2x = -22

Now we want to isolate x completely, so we need to get rid of the coefficient (2) that's multiplied with x.

To cancel out the 2, we can divide both sides of the equation by 2. This gives us:

2x/2 = -22/2

Simplifying, we get:

x = -11

So the solution to the equation 2x + 7 = -15 is x = -11.