-1,2(-3х-у)+7,9х-0,7(4у-х), при х=-0,2, у=0,6

To evaluate the given expression at \(x=-0.2\) and \(y=0.6\), we substitute these values into the expression:

\[ -1.2(-3(-0.2)-0.6)+7.9(-0.2)-0.7(4*0.6-(-0.2)) \]

Now we simplify step by step:

\[ -1.2(0.6+0.6)+7.9(-0.2)-0.7(2.4+0.2) \]

\[ -1.2(1.2)+7.9(-0.2)-0.7(2.6) \]

\[ -1.44-1.58-1.82 \]

\[ -4.84 \]

Therefore, the value of the expression at \(x=-0.2\) and \(y=0.6\) is \(-4.84\).