Asked by Breaonna
solve 15x + 4y = 9; x = -3
Answers
Answered by
Reiny
well, let's replace x with -3 in the 1st equation:
15x + 4y = 9
15(-3) + 4y = 9
-45 + 4y = 9
4y = 54
y = 54/4 = 27/2
15x + 4y = 9
15(-3) + 4y = 9
-45 + 4y = 9
4y = 54
y = 54/4 = 27/2
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