Answer:
See below
Step-by-step explanation:
9x-7=0
We want to isolate the variable, or in other words, get x alone.
The first step is to add 7 to each side to get the constant on one side and the variable on the other
9x-7+7 = 0+7
9x =7
The since we are multiplying x by 9, we need to do the opposite to isolate it. We will divide by 9. What we do to one side, we do to the other. Divide both sides by 9
9x/9 = 7/9
x =9
We have successfully isolated the variable and solved for x.
