Question

Solve, using the substitution method.


m + n = 5

m – n = 3



A.


There is no solution.


B.


The solution is (2, –1)


C.


The solution is (4, 1)


D.


There are an infinite number of solutions.

Answer 1

i will give fan and medal o and a testominal

Answer 2

take the 2nd equation and make m the subject..

add n to both sides of the equation

m = n + 3

now substitute this into the 1st equation for m

(n + 3) + n = 5

or

2n + 3 = 5

solve for n

when you get n, substitute the value into either equation and find m

hope this helps