1 equals 0.4 x minus 0.9 x minus 39

Answer 1

Let's solve the equation step by step:

You have the equation:

\[ 1 = 0.4x - 0.9x - 39 \]

First, combine the terms with \( x \):

\[ 0.4x - 0.9x = -0.5x \]

So, the equation becomes:

\[ 1 = -0.5x - 39 \]

Next, add 39 to both sides of the equation:

\[ 1 + 39 = -0.5x \]

This simplifies to:

\[ 40 = -0.5x \]

Now, divide both sides by -0.5 to solve for \( x \):

\[ x = \frac{40}{-0.5} \]

Calculating that gives:

\[ x = -80 \]

So the solution to the equation is:

\[ x = -80 \]