Question

надо решать по шагово​

Answer 1

$( - 5.16 + 2.3 \times ( - 1.1)) \div ( - 15.38) - 0.9 = - 0.4 \\ 2.3 \times ( - 1.1) = - 2.53 \\ - 5.16 - 2.53 = - 7.69 \\ - 7.69 \div ( - 15.38) = - 769 \div ( - 1538) = 0.5 \\ 0.5 - 0.9 = - 0.4$

$0.5x - 3.16 = - 4.26 \\ 0.5x = - 4.26 + 3.16 \\ 0.5x = - 1.1 \\ x = - 1.1 \div 0.5 \\ x = - 2.2$