<h2>
Hello!</h2>
The answers are:
1 
2 
3
4 
5 
<h2>Why?</h2>
To know the solution of the problems, we need to isolate each variable.
Remember that:
- If we have an equality: if the number is subtracting (negative sign), and if you need to move it to the other side of the equality, its sign changes to positive.
- If we have an equality: if the number is adding (positive sign), and if you need to move it to the other side of the equality, its sign changes to negative.
- If we have an equality: if the number is part of a product , and if you need to move it to the other side of the equality, the same number will be dividing the factors of the side. On the opposite, if the number is dividing, it will be multiplying on the other side of the equality.
So,
1 - Solving for "x"

2 - Solving for "x"

3 - Solving for "x"

4 - Finding the solution

5 - Finding the solution

Have a nice day!
4y+5=4y-6 doesn't have a solution because you need to subtract 4y from both sides so you do 4y+5-4y=4y-6-4y so 5= -6 and then you subtract 5 from both sides which is 5-5=-6-5 and 0=-11.
Answer:
D
Step-by-step explanation:
8.4 minus 3 equals 5.4
10¹⁰ minus 10⁷ is 10³
C,g,a,j my teacher graded it with me today hope this helps! :)))
Answer:
C. X = 4
Step-by-step explanation: