1. Вычислите: −1,114 + 2/3 · (1,134 : 0,28 − 4,254) + 1 32/49 : (4 15/49 − 2 13/14).

\[1{,}134:0{,}28=4{,}05,\qquad 4{,}05-4{,}254=-0{,}204.\]

\[\frac23\cdot(-0{,}204)=-0{,}136.\]

\[1\frac{32}{49}=\frac{81}{49},\qquad 4\frac{15}{49}-2\frac{13}{14}=\frac{211}{49}-\frac{153}{49}=\frac{58}{49}.\]

\[\frac{81}{49}:\frac{58}{49}=\frac{81}{58}.\]

\[-1{,}114-0{,}136+\frac{81}{58}= -1{,}25+\frac{81}{58}=\frac{43}{290}.\]

Ответ: \(\frac{43}{290}\).