Toán Câu1:1/4+x=5/2×8/7 Câu2:7/3-x=11/5×5/6 27/09/2021 By Adalynn Câu1:1/4+x=5/2×8/7 Câu2:7/3-x=11/5×5/6
1/ $\dfrac{1}{4}+x=\dfrac{5}{2}×\dfrac{8}{7}$ $\dfrac{1}{4}+x=\dfrac{20}{7}$ $x=\dfrac{20}{7}-\dfrac{1}{4}$ $x=\dfrac{73}{28}$ 2/ $\dfrac{7}{3}-x=\dfrac{11}{5}×\dfrac{5}{6}$ $\dfrac{7}{3}-x=\dfrac{11}{6}$ $x=\dfrac{7}{3}-\dfrac{11}{6}$ $x=\dfrac{1}{2}$ chúc bạn học tốt! Trả lời
Đáp án: Giải thích các bước giải: Câu1 `1/4+x=5/2×8/7` `1/4+x=20/7` `=>x=20/7-1/4=73/28` Câu2: `7/3-x=11/5×5/6` `7/3-x=11/6` `=>x=7/3-11/6=3/6=1/2` Trả lời
1/
$\dfrac{1}{4}+x=\dfrac{5}{2}×\dfrac{8}{7}$
$\dfrac{1}{4}+x=\dfrac{20}{7}$
$x=\dfrac{20}{7}-\dfrac{1}{4}$
$x=\dfrac{73}{28}$
2/
$\dfrac{7}{3}-x=\dfrac{11}{5}×\dfrac{5}{6}$
$\dfrac{7}{3}-x=\dfrac{11}{6}$
$x=\dfrac{7}{3}-\dfrac{11}{6}$
$x=\dfrac{1}{2}$
chúc bạn học tốt!
Đáp án:
Giải thích các bước giải:
Câu1
`1/4+x=5/2×8/7`
`1/4+x=20/7`
`=>x=20/7-1/4=73/28`
Câu2:
`7/3-x=11/5×5/6`
`7/3-x=11/6`
`=>x=7/3-11/6=3/6=1/2`