Answer:
1. x= -5
2. n= 6
3. p= 5
4. m= -6
5. n= 5
6. k= -3
7. n= 7
8. m= 8
9. n= -4
10. n= -6
Step-by-step explanation:
The key is to isolate the variable. Follow PEMDAS (parentheses, exponents, multiply/divide from left to right, add/subtract from left to right) to get the right answer. You have to distribute the number next to the parentheses by multiplication. Like number one:
110 = -5(4x-2)
First you distribute the -5. You multiply -5 by 4x, and then -5 by -2.
You should be left with this:
110 = -20x + 10
You still have to isolate the variable, so next we move the constant, 10, over. What you do to one side, you must do to the other. To take it away from the right side of the equation, you must do the opposite sign. Since it's plus 10, you will subtract 10. You will do this
110 = -20x + 10
-10 - 10
-----------------------------
100 = -20x + 0
Now we are almost done. To finally isolate the variable, we must divide the -20x by -20. Remember, what is done in one side must be done to the other. This is the last step.
100÷ -20 = -20x÷ -20
You should be left with
-5 = x
That is how you get the answer.
