Question

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.

Answer 1

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

Answer 2

your answer will be (4,1)

Explanation:

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