Chibi Yoona
(5 / 4) + ((9 / 11.11) / 12) =1.31750675068
\(\dfrac{5}{4}+\dfrac{9}{11}.\dfrac{11}{12}\)
=\(\dfrac{5}{4}+\dfrac{9.11}{11.12}\)
=\(\dfrac{5}{4}+\dfrac{9}{12}\)
=\(\dfrac{5}{4}+\dfrac{3}{4}\)
\(=2\)
Chibi Yoona
(5 / 4) + ((9 / 11.11) / 12) =1.31750675068
\(\dfrac{5}{4}+\dfrac{9}{11}.\dfrac{11}{12}\)
=\(\dfrac{5}{4}+\dfrac{9.11}{11.12}\)
=\(\dfrac{5}{4}+\dfrac{9}{12}\)
=\(\dfrac{5}{4}+\dfrac{3}{4}\)
\(=2\)
Tính
5/4+9/11.11/12
8/5+0.25.16/15-13/15
tính hợp lí: 10 x 4^6 x 9^5+ 6^9 x 120 : 8^4 x 3^12 - 6^11
Tính : 12 -12 +11 +10 -9 +8 -7 +5 -4 +3+2-1
1. | 4-2x | . 1/3 = 1/3
2. (-3)² : | x+(-1) | = (-3)
3. | 3/2 -x | + (-4/5) = -14/5
4. (-4/3) - | 2x + (-1) | = -7/3
5. -9 . | 36 - x/2 | = (-54)
6. 0,75 - | (-x) + 1/3 | = 0,25
7. (-6/5) + | x-9 |= (-6/5)
8. (-4) . | 3x - 1/5 | = 12
tính :
12 -12 +11 +10 -9 +8 -7 +5 - 4+ 3 +2 -1
1, Tính
\(-2\dfrac{1}{4}.\left(3\dfrac{5}{12}-1\dfrac{2}{9}\right)\)
\(\left(-25\%+0,75+\dfrac{7}{12}\right):\left(-2\dfrac{1}{8}\right)\)
2, Tính nhanh
\(\dfrac{4}{9}.19\dfrac{1}{3}-\dfrac{4}{9}.39\dfrac{1}{3}\) | \(19\dfrac{5}{8}:\dfrac{7}{12}-15\dfrac{1}{4}.\dfrac{12}{7}\)
\(\dfrac{-5}{7}.\dfrac{5}{11}+\dfrac{-5}{7}.\dfrac{2}{11}-\dfrac{5}{7}:\dfrac{11}{14}\) | \(\dfrac{4}{7}.\dfrac{89}{5}-\dfrac{4}{5}.\dfrac{82}{7}\)
\(\dfrac{5}{7}.\dfrac{-4}{19}+\dfrac{-15}{7}.\dfrac{5}{19}\) | \(8\dfrac{2}{7}-\left(3\dfrac{4}{9}+4\dfrac{2}{7}\right)\)
- Giải hộ với ạ, mấy anh, chị lớp 7,8 cũng được huhu :(( sáng mai nộp đề cương rồi. Làm ơn đi a
Muốn gì cũng hậu tạ :>
Trong bài phép chia phân số (Chương trình VNEN)
Tìm x
a ) 4/9.x = 1/9
b) 7/18 . x - 2/3 = 5/18
c) x:-1/12 = 7/12
d) 4/9- 7/8.x = -2/3
e) -5/14 : x = -3/10
g) 1/6 + -5/7 : x = -7/18
tìm x
a) x.3/1/4+(-7/6).x-1/2/3=5/12
b)2/5+3/5.(3x-3,7)=-53/10
c)7/9:(2+3/4x)+5/9=23/27
1) (-5) . (-8) - 45 . (-3) +(-6) . (-12)=?
b) 6 . (-15) + (-8) . (-9) - 72 . (-2)=?
c) (-15) . 4 - (-4) .16 - (-8) . 32