10(1,6-9)=7

It looks like you are trying to evaluate an expression, possibly involving a mathematical equation. Let's break it down.

The expression you have is:

\( 10(1,6-9) = 7 \)

However, the comma in “1,6-9” makes it unclear. If we interpret it as a multiplication of 10 by the result of \( (1.6 - 9) \), we can recalculate as follows:

1. Calculate \( 1.6 - 9 = -7.4 \).
2. Then multiply by 10: \( 10 \times (-7.4) = -74 \).

So, the left side evaluates to -74, not 7.

If that was not your intention, could you please clarify or provide more context regarding your question?