a) x+8=6 b) x-4 phần 15 = -3 phần 15 c) 4 phần 5 +5 phần 7 : x=1 phần 6 d) 3 phần π = 12 phần 16 15/10/2021 Bởi Arya a) x+8=6 b) x-4 phần 15 = -3 phần 15 c) 4 phần 5 +5 phần 7 : x=1 phần 6 d) 3 phần π = 12 phần 16
a) x + 8 = 6 x = 6 – 8 x = -2 b) x – $\frac{4}{15}$ = $\frac{-3}{15}$ x = $\frac{4}{15}$ + $\frac{-3}{15}$ x = $\frac{1}{15}$ c) $\frac{4}{5}$ + $\frac{5}{7}$ : x = $\frac{1}{6}$ $\frac{5}{7}$ : x = $\frac{1}{6}$ – $\frac{4}{5}$ $\frac{5}{7}$ : x = $\frac{-19}{30}$ x = $\frac{5}{7}$ : $\frac{-19}{30}$ x = $\frac{150}{133}$ d) $\frac{3}{x}$ = $\frac{12}{16}$ ⇒ x . 12 = 3 . 16 x . 12 = 48 x = 48 : 12 x = 4 Bình luận
a/ x + 8 = 6 x = 6 – 8 x = -2. b/ x-$\frac{4}{15}$ = $\frac{-3}{15}$ x = $\frac{4}{15}$ + $\frac{-3}{15}$ x = $\frac{1}{15}$. c/ $\frac{4}{5}$ + $\frac{5}{7}$ : x = $\frac{1}{6}$ $\frac{5}{7}$ : x = $\frac{1}{6}$ – $\frac{4}{5}$ $\frac{5}{7}$ : x = $\frac{-19}{30}$ x = $\frac{5}{7}$ : $\frac{-19}{30}$ x = $\frac{-150}{133}$ . d/ $\frac{3}{x}$ = $\frac{12}{16}$ ⇒ x . 12 = 3 . 16 x . 12 = 48 x = 48 : 12 x = 4. Bình luận
a) x + 8 = 6
x = 6 – 8
x = -2
b) x – $\frac{4}{15}$ = $\frac{-3}{15}$
x = $\frac{4}{15}$ + $\frac{-3}{15}$
x = $\frac{1}{15}$
c) $\frac{4}{5}$ + $\frac{5}{7}$ : x = $\frac{1}{6}$
$\frac{5}{7}$ : x = $\frac{1}{6}$ – $\frac{4}{5}$
$\frac{5}{7}$ : x = $\frac{-19}{30}$
x = $\frac{5}{7}$ : $\frac{-19}{30}$
x = $\frac{150}{133}$
d) $\frac{3}{x}$ = $\frac{12}{16}$
⇒ x . 12 = 3 . 16
x . 12 = 48
x = 48 : 12
x = 4
a/ x + 8 = 6
x = 6 – 8
x = -2.
b/ x-$\frac{4}{15}$ = $\frac{-3}{15}$
x = $\frac{4}{15}$ + $\frac{-3}{15}$
x = $\frac{1}{15}$.
c/ $\frac{4}{5}$ + $\frac{5}{7}$ : x = $\frac{1}{6}$
$\frac{5}{7}$ : x = $\frac{1}{6}$ – $\frac{4}{5}$
$\frac{5}{7}$ : x = $\frac{-19}{30}$
x = $\frac{5}{7}$ : $\frac{-19}{30}$
x = $\frac{-150}{133}$ .
d/ $\frac{3}{x}$ = $\frac{12}{16}$
⇒ x . 12 = 3 . 16
x . 12 = 48
x = 48 : 12
x = 4.