Solve, using the substitution method. m + n = 5

m – n = 3

There is no solution.

The solution is (2, –1)

The solution is (4, 1)

There are an infinite number of solutions.

Step-by-step explanation:

m-n = 3 becomes m=3+n

Substitute 3+n to m in m+n = 5

Therefore;

3+n+n = 5

3 + 2n = 5

2n = 2

n = 1

m - n = 3, n is 1

therefore;

m - 1 = 3

m = 4

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step-by-step explanatio89

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart