Question

дам 30 балов больше нет только бистро

Answer 1

$x\div ( - 2.3) = - 4.6 \\ x = - 4.6 \times ( - 2.3) \\ x = 10.58$

$(7 - x)(x + 2 2) = 0 \\ (x - 7)(x + 2) = 0 \\ x_{1} = 7 \\ x _{2} = - 2$

$- 2.7 \times x = 10.8 \\ x = 10.8 \div ( - 2.7) \\ x = 108 \div ( - 27) \\ x = - 4$