Toán A) -x-2/3=-6/7 B) 4/7-x=1/3 C) x-1/15=1/10 D) -2/15-x=-3/10 08/09/2021 By Adalynn A) -x-2/3=-6/7 B) 4/7-x=1/3 C) x-1/15=1/10 D) -2/15-x=-3/10
Đáp án: Giải thích các bước giải: \(a,\\ (-x)-\dfrac{2}{3}=\dfrac{-6}{7}\\ ⇔(-x)=\dfrac{-6}{7}+\dfrac{2}{3}\\ ⇔(-x)=\dfrac{-4}{21}\\ ⇔x=\dfrac{4}{21}\\ \text{Vậy x =}\ \dfrac{4}{21}\\ b,\\ \dfrac{4}{7}-x=\dfrac{1}{3}\\ ⇔x=\dfrac{4}{7}-\dfrac{1}{3}\\ ⇔x=\dfrac{5}{21}\\ \text{Vậy x =}\ \dfrac{5}{21}\\ c,\\ x-\dfrac{1}{15}=\dfrac{1}{10}\\ ⇔x=\dfrac{1}{10}+\dfrac{1}{15}\\ ⇔x=\dfrac{1}{6}\\ \text{Vậy x =}\ \dfrac{1}{6}\\ d,\\ \dfrac{-2}{15}-x=\dfrac{-3}{10}\\ ⇔x=\dfrac{-2}{15}-\dfrac{-3}{10}\\ ⇔x=\dfrac{1}{6}\\ \text{Vậy x =}\ \dfrac{1}{6}\) chúc bạn học tốt! Trả lời
Đáp án: (A)-x-2/3=-6/7 -x=-6/7+2/3 -x=-4/21 x=4/21 (B)4/7-x=1/3 -x=-4/7+1/3 -x=-5/21 -x=5/21 (C)x-1/15=1/10 x =1/15+1/10 x=1/6 (D)-2/15-x=-3/10 -x=-3/10+2/15 -x=-1/6 x=1/6 Xin hay nhất và cảm ơn Trả lời
Đáp án:
Giải thích các bước giải:
\(a,\\ (-x)-\dfrac{2}{3}=\dfrac{-6}{7}\\ ⇔(-x)=\dfrac{-6}{7}+\dfrac{2}{3}\\ ⇔(-x)=\dfrac{-4}{21}\\ ⇔x=\dfrac{4}{21}\\ \text{Vậy x =}\ \dfrac{4}{21}\\ b,\\ \dfrac{4}{7}-x=\dfrac{1}{3}\\ ⇔x=\dfrac{4}{7}-\dfrac{1}{3}\\ ⇔x=\dfrac{5}{21}\\ \text{Vậy x =}\ \dfrac{5}{21}\\ c,\\ x-\dfrac{1}{15}=\dfrac{1}{10}\\ ⇔x=\dfrac{1}{10}+\dfrac{1}{15}\\ ⇔x=\dfrac{1}{6}\\ \text{Vậy x =}\ \dfrac{1}{6}\\ d,\\ \dfrac{-2}{15}-x=\dfrac{-3}{10}\\ ⇔x=\dfrac{-2}{15}-\dfrac{-3}{10}\\ ⇔x=\dfrac{1}{6}\\ \text{Vậy x =}\ \dfrac{1}{6}\)
chúc bạn học tốt!
Đáp án:
(A)-x-2/3=-6/7
-x=-6/7+2/3
-x=-4/21
x=4/21
(B)4/7-x=1/3
-x=-4/7+1/3
-x=-5/21
-x=5/21
(C)x-1/15=1/10
x =1/15+1/10
x=1/6
(D)-2/15-x=-3/10
-x=-3/10+2/15
-x=-1/6
x=1/6
Xin hay nhất và cảm ơn