Answer:
V = -9
Step-by-step explanation:
-15V - 40 = 23 - 8V
The objective is to get V alone. To do this, first subtract -15V from both sides. Since -15V is a negative, subtracting it will be adding a positive.
-40 = 23 + 7V
Now that there is only one term with the variable V, subtract 23 from both sides.
-63 = 7V
Finally, divide both sides by 7 to get V completely isolated.
-9 = V.
The final answer is V = -9.
Answer:
V = -9
Step-by-step explanation:
First, you get rid of the variable on one side of the equation. In this case, you'd pick -15V or -8V to add, because they're negative, to either side.
-15V - 40 = 23 -8V
+8V + 8V
The -8V and +8V cancel out, so you're left with -7V - 40 = 23.
Next, you'd add 40 to both sides to get rid of that number and leave yourself with a variable on one side and a regular number on the other side.
-7V - 40 = 23
+ 40 +40
You'll end up, after this step, at -7V = 63.
Finally, you divide both sides by -7 to get the variable alone.
-7V = 63
/-7 /-7
Now, you have what the variable is equal to.
V = -9
