Найдите x из равенства:
а) −x = 4,5 − (−2);
б) −x = −8,2 + 10;
в) $-x = -\frac{8}{43} + (-\frac{15}{43})$;
г) $-x = -\frac{7}{15} - (-\frac{2}{15})$;
д) $-x = \frac{7}{15} - (+\frac{14}{15})$;
е) $-x = -\frac{5}{12} - (+\frac{11}{12})$.
−x = 4,5 − (−2)
−x = 4,5 + 2
−x = 6,5
x = −6,5
−x = −8,2 + 10
−x = 1,8
x = −1,8
$-x = -\frac{8}{43} + (-\frac{15}{43})$
$-x = -\frac{8}{43} - \frac{15}{43}$
$-x = -\frac{23}{43}$
$x = \frac{23}{43}$
$-x = -\frac{7}{15} - (-\frac{2}{15})$
$-x = -\frac{7}{15} + \frac{2}{15}$
$-x = -\frac{5}{15}$
$-x = -\frac{1}{3}$
$x = \frac{1}{3}$
$-x = \frac{7}{15} - (+\frac{14}{15})$
$-x = \frac{7}{15} - \frac{14}{15}$
$-x = -\frac{7}{15}$
$x = \frac{7}{15}$
$-x = -\frac{5}{12} - (+\frac{11}{12})$
$-x = -\frac{5}{12} - \frac{11}{12}$
$-x = -\frac{16}{12}$
$-x = -\frac{4}{3}$
$-x = -1\frac{1}{3}$
$x = 1\frac{1}{3}$
Пожауйста, оцените решение