Question 1:
For this case we have the following expression:
We have to:
Rewriting:
We take common factor "-" in the denominator:
ANswer:
Question 2:
For this case we must simplify the following expression:
We eliminate parentheses keeping in mind that:
We add similar terms:
Answer:
180-116=54
90-53=37
90-54=36
180-(36+37)=180-73=107
x=107
Sorry if it is a wrong answer, but i tried, i think it is right
When solving for a variable, you want to get it isolated (i.e. alone). Here are the steps to do this equation...
1. Given: kx-3=5
2. Add three to both sides to remove the -3, and this gives you kx=8
3. Since the x is being multiplied by k, you want to do the inverse and divide both sides by k, and this gives you x=8/k
So this means that your answer is D
If you need any further explanation, let me know :)