Solve for x.

Question

x + 0.60(15) = 0.80(x + 15)
Responses
A 99
B 1212
C 1313
D 15

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Answer 1

To solve for x, we can start by distributing the 0.60 and 0.80 terms on the right side of the equation:

x + 0.60(15) = 0.80(x + 15)

x + 9 = 0.80x + 12

Next, we can subtract x from both sides to isolate the x term:

9 = 0.80x + 12 - x

9 = 0.20x + 12

Now, subtract 12 from both sides:

9 - 12 = 0.20x + 12 - 12

-3 = 0.20x

Finally, divide both sides by 0.20 to find the value of x:

x = -3 / 0.20

x = -15

Therefore, the solution is x = -15.