Please help!! Middle school math, this is timed!! No links or i will report!
2 answers:
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we are given
Whenever we are given 'c' unit to left side
we can replace x as x+c
Here , it is shifted left side by one unit
so, we can replace x as x+1
so, we get
now, we can simplify it
...........Answer
Answer:
Peter rents 6 of the rafts seating 3 people, and 7 of the rafts seating 5 people.
Step-by-step explanation:
Let denote the number of rafts seating 3 people and
the number of rafts seating 5 people. The total number of rafts is 13, so
. We can also assume that every raft is filled to the brim (it isn't stated explicitly though, but it's probably the intention of the question maker), so
.
It's always a good idea to put these equations under each other:
We can subtract the first equation three times from the second one to obtain
Now, substitute this found value for into
and we see that
. We are now done: Peter rents 6 of the rafts seating 3 people, and 7 of the rafts seating 5 people.