Answer:
Step-by-step explanation:
Answer:
The given equation is NOT justified.
Step-by-step explanation:
Here, the given equation is =
Now, here Consider the left hand side and simplifying the left side by operating on the like terms,
⇒ =
=
Here, Left side of equation ≠ Right side of the equation
Hence, ≠
My method is on a) you would just subtract 12 and 7 which is 5. You can do the rest and then when you get all the answers put them from smallest to largest