Answer:
a.x=4
b.x=4
c.(b)
Step-by-step explanation:
We are given that
a. First we adding x on both sides we get
Now, subtract 5 on both sides we get
b.
We are subtracting 9 from both sides we get
We can solve equation both approach a and b
But I prefer (b) because in approach (b)
There are only 3 step in which we can get answer but in approach (a) we can get answer in 4 steps .
Hence, I prefer approach (b)
Here the right side of the 2 equations (which are different) both equal y
so 0 solutions
B. If you multiply 1/12 by (-x) it's -1/12x and if you multiply 1/12 by (-4) it's -4/12 which is equivalent to -1/3.