Question

Пж помогите математика уравнения
)x – 4,8 = - 1,6 ;
б) 1,5 + (-y) = - 3,2;
в)г) – b : 0,8 = 1,25
д) (t+2)(t – 2) = 0​

Answer 1

$x - 4.8 = - 1.6 \\ x = - 1.6 + 4.8 \\ x = 3.2$

$1.5 + ( - y) = - 3.2 \\ 1.5 - y = - 3.2 \\ - y = - 3.2 - 1.5 \\ - y = - 4.7 \\ y = 4.7$

$- b \div 0.8 = 1.25 \\ - b = 1.25 \times 0.8 \\ - b = 1 \\ b = - 1$

$(t + 2)(t - 2) = 0 \\ t + 2 = 0 \\ t_{1} = - 2 \\ t - 2 = 0 \\ t_{2} = 2$