Answer:
see explanation
Step-by-step explanation:
If we consider the differences between consecutive terms, that is
-
=
1 -
=
1 - 1
=
To obtain the next term in the pattern add to the previous term.
batches = 5 ⇒ milk = 1 +
= 1
batches = 6 ⇒ milk = 1 +
= 2
Answer:
The step 4 is not what he should have done. But the wrong is step 5, because if he added -2x both sides, it would give the following equation:
and not
Note that in step 4 he should have added 2x and not -2x to both sides, but we still have the equality. The problem is that step 5 is totally wrong.
I don't know what answer is expected to this question, but I would mark step 5, because this is mathematically wrong.
Solving the equation
Using distribution
Add both sides
Add 12 both sides
Divide both sides by 5