Question

Solve, using the substitution method.


j + k = 3

j – k = 7



The solution is (8, 1).


The solution is (5, –2).

There is no solution.

There are an infinite number of solutions.

Answer 1

if this is multiple choice question you dont need substitution, you just add equation 1 and 2 and get 2j is 10, j is 5 so answer is B