Question

If 0.65x + 10 = 15, what is the value of x? a. 4.92 b. 5.78 c. 6.45 d. 7.69 e. 8.12

Answer 1

Answer: 7.69

1. Solve (The „|” means operation at both sides of equation):


`image`, and this is about 7.69 (so right answer is
`\textbf{D}`

Step-by-step explanation:

Firstly, I made numbers to the right side, with changing their sign.

Secondly, I changed both sides of equation into fractions, because its easier to divide by fraction in this case (And you can divide fractions by multiplying first number, by reverse of the second).

And lastly, I have rounded answer to get 7.69.

Hope this helps!