1 point 24. Which of the following equations has a solution of -5? * I. 3x - 5 = -10 II. -3x - 5 = 10 III. -2x - 15 = -5 O A) I and II O B) II and III O C) I and III OD) I, II and I
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1 point 24. Which of the following equations has a solution of -5? * I. 3x - 5 = -10 II. -3x - 5 = 10 III. -2x - 15 = -5 O A) I and II O B) II and III O C) I and III OD) I, II and I
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To find out the solution of its equation, both sides of the equation must the same or equal. To do this, let us substitute x = -5.
I. 3x - 5 = -10
3(-5) - 5 = -10
-15 - 5 = -10
-20 = -10 NOT A SOLUTION
II. -3x - 5 = 10
-3(-5) - 5 = 10
15 - 5 = 10
10 = 10 A SOLUTION
III. -2x - 15 = -5
-2(-5) - 15 = -5
10 - 15 = -5
-5 = -5 A SOLUTION
Both II and III are solutions. Therefore, the answer is
B) II and III.