\text { The line integral } \int(3 \cdot x-2 \cdot y) d x+x d y \text {, where } C \text { is the curve } r(t)=\langle 3 \cdot t-2,-2 \cdot t+3\rangle \text { with } 0 \leq t \leq 1 \text {, is equal to: }