-301:43=

To solve the expression \(-301:43\), we interpret the colon (:) as division. Thus, it becomes:

\[ -301 \div 43 \]

Calculating this gives:

\[ -301 \div 43 \approx -7 \]

To find a more precise value, we can perform the division:

\[ -301 \div 43 \approx -7.0 \]

So the answer is:

\[ \approx -7 \]

If you need a decimal, it is approximately \(-7.0\).