16 2/7 : (-3/5) + 28 2/7 : 3/5
B= 16 2\7:(-3\5)- 28 2\7:(-3\5)
\(B=\dfrac{-5}{3}\left(16+\dfrac{2}{7}-28-\dfrac{2}{7}\right)=-12\cdot\dfrac{-5}{3}=20\)
\(16\dfrac{2}{7}:\left(\dfrac{-3}{5}\right)+28\dfrac{2}{7}:\dfrac{3}{5}\)
\(16\dfrac{2}{7}:\left(\dfrac{-3}{5}\right)+28\dfrac{2}{7}:\dfrac{3}{5}\)
\(=\left(-16-\dfrac{2}{7}+28+\dfrac{2}{7}\right)\cdot\dfrac{5}{3}\)
\(=12\cdot\dfrac{5}{3}=20\)
a) 4/7.|x|+1/28=12/28
b)16/2/7:(-3/5)-26/2/7:(-/5)
Câu b 16/2/7 và 26/2/7 là hỗn số nha
Thanks
6) \(16\dfrac{2}{7}:\left(\dfrac{-3}{5}\right)+28\dfrac{2}{7}:\dfrac{3}{5}\)
\(16\dfrac{2}{7}:\left(\dfrac{-3}{5}\right)+28\dfrac{2}{7}:\dfrac{3}{5}\)
\(=\left(-16-\dfrac{2}{7}\right)\cdot\dfrac{5}{3}+\left(28+\dfrac{2}{7}\right)\cdot\dfrac{5}{3}\)
\(=12\cdot\dfrac{5}{3}=20\)
\(16\frac{2}{7}:\frac{-3}{5}-28\frac{2}{7}:\frac{-3}{5}\)
Đề tự chép lại nha!
\(\left(16\frac{2}{7}-28\frac{2}{7}\right)\):\(\left(\frac{-3}{5}\right)\)
= -12 :\(\left(\frac{-3}{5}\right)\)
= 20
Hk tốt
\(16\frac{2}{7}\div\frac{-3}{5}-28\frac{2}{7}\div\frac{-3}{5}\)
\(=\left[\left(16-28\right)\frac{2}{7}\right]\div\frac{-3}{5}\)
\(=-12\frac{2}{7}\div\frac{-3}{5}\)
\(=\frac{-84}{7}\div\frac{-3}{5}\)
\(=-12\div\frac{-3}{5}\)
\(=20\)
Học tốt!!!
16 và 2 phần 7 chia âm 3 phần 5 cộng 28 và 2 phần 7 chia 3 phần 5
-12:(3/4-5/6)^2
7/23.((-8/6)-45/18)
23/1/4.7/5-13/1/4:5/7
(1+2/3-1/4)(0,8-3/4)
16/2/7:(-3/5)+28/2/7:3/5
xấp xỉ -113595,7577
\(16\dfrac{2}{7}:\left(-\dfrac{3}{5}\right)+28\dfrac{2}{7}:\dfrac{3}{5}\)
\(=\left(-16-\dfrac{2}{7}\right)\cdot\dfrac{5}{3}+\left(28+\dfrac{2}{7}\right)\cdot\dfrac{5}{3}\)
\(=\dfrac{5}{3}\left(-16-\dfrac{2}{7}+28+\dfrac{2}{7}\right)\)
\(=12\cdot\dfrac{5}{3}=20\)
\(16\frac{2}{7}:\left(\frac{-3}{5}\right)+28\frac{2}{7}:\frac{3}{5}\)
\(16\frac{2}{7}:\left(-\frac{3}{5}\right)+28\frac{2}{7}:\frac{3}{5}\)
\(=\frac{114}{7}:\left(-\frac{3}{5}\right)+\frac{198}{7}:\frac{3}{5}\)
\(=-\frac{190}{7}+\frac{330}{7}\)
\(=20\)