Решим линейные уравнения:
- a) -6x = 18
x = 18 / (-6)
x = -3
Ответ: x = -3
- б) 15x = 5
x = 5 / 15
x = $$\frac{1}{3}$$
Ответ: x = $$\frac{1}{3}$$
- в) -x = -3,4
x = 3,4
Ответ: x = 3,4
- г) -6x =$$\frac{2}{7}$$
x = $$\frac{2}{7}$$ / (-6)
x = $$\frac{2}{7}$$ × (-$$\frac{1}{6}$$)
x = -$$\frac{1}{21}$$
Ответ: x = -$$\frac{1}{21}$$
- д) 3x = 0
x = 0 / 3
x = 0
Ответ: x = 0
- e) -1,2x = 24
x = 24 / (-1,2)
x = -20
Ответ: x = -20
- ж) -1$$\frac{2}{3}$$x = -2$$\frac{1}{3}$$
-$$\frac{5}{3}$$x = -$$\frac{7}{3}$$
x = (-$$\frac{7}{3}$$) / (-$$\frac{5}{3}$$)
x = $$\frac{7}{3}$$ × $$\frac{3}{5}$$
x = $$\frac{7}{5}$$ = 1$$\frac{2}{5}$$ = 1,4
Ответ: x = 1,4
- з) $$\frac{x}{9}$$ = -2
x = -2 × 9
x = -18
Ответ: x = -18
- и) -0,1x = $$\frac{2}{15}$$
x = $$\frac{2}{15}$$ / (-0,1)
x = $$\frac{2}{15}$$ / (-$$\frac{1}{10}$$)
x = $$\frac{2}{15}$$ × (-$$\frac{10}{1}$$)
x = -$$\frac{20}{15}$$ = -$$\frac{4}{3}$$ = -1$$\frac{1}{3}$$
Ответ: x = -1$$\frac{1}{3}$$