You solve the substitution method to solve a system of equality by expressing one variable in terms of the other using one equation, and then plugging this expression in the other(s).
In this case, the first equation gives us a way to express n in terms of m. So, we can replace every occurrence of n in the second equation with the given formula.
The result is
So, the second equation turned to be an equality, i.e. an equation where both sides are the same.
This implies that the system has infinitely many solutions, because every couple 
such that 
is a solution to the system, because it satisfies both equations: the first is trivially satisfied, whereas the second is an identity, and as such is satisfied by any value of the variable.
Answer:
8(x+9)=7
comment if you need anything else like solving for x
Answer:
4. y = 8 - x is the right answer
Answer: Hello your question lacks some details attached below is the complete question
answer:
- Place a compass at point Q ,
-
measure arc PQ
-
Draw an arc with the compass that is equal to PQ
,
- Place the compass at point R
,
- cut through the line to the left of R with the arc in compass,
-
Assume the new points to be P' and R be Q'
, where P' Q' will become the new image of PQ with their end point will be R
Step-by-step explanation:
The steps required to draw an arc intersecting the line that will create a segment with length PQ are ;
Place a compass at point Q , measure arc PQ
Draw an arc with the compass that is equal to PQ
, Place the compass at point R
, cut through the line to the left of R with the arc in compass,
Assume the new points to be P' and R be Q'
, where P' Q' will become the new image of PQ with their end point will be R
