\(\dfrac{3}{5}\) \(\times\) ( \(\dfrac{5}{2}\) - \(\dfrac{10}{3}\)) - \(\dfrac{5}{8}\): ( \(\dfrac{1}{4}\) - \(\dfrac{2}{3}\))
\(\dfrac{3}{5}\) \(\times\) \(\dfrac{5}{2}\) - \(\dfrac{3}{5}\) \(\times\) \(\dfrac{10}{3}\) - \(\dfrac{5}{8}\): (-\(\dfrac{5}{12}\))
= \(\dfrac{3}{2}\) - 2 + \(\dfrac{3}{2}\)
= (\(\dfrac{3}{2}\) + \(\dfrac{3}{2}\)) - 2
= 3 - 2
= 1
1. Tính hợp lí:
a) B = 1/2 - [ 3/8 + ( -7/4 ) ]
b) -4/12 - ( -13/39 - 0,25 ) + 0,75
c) 1/2 - 1/3 + 1/23 + 1/6
d) ( -13/7 - 4/9) - ( -10/7 - 4/9 )
e) ( 7/8 - 5/2 + 4/7 ) - ( -3/7 + 1 - 13/8 )
f) -3/7 + ( 3 - 3/4 ) - ( 2,25 - 10/7)
g) ( 5/3 - 3/7 + 9 ) - ( 2 + 5/7 - 2/3 ) + ( 8/7 - 4/3 - 10 )
\(\dfrac{4^{10}.9^6+3^{12}.8^5}{6^{13}.4-2^{16}.3^{12}}\)
Tính hợp lí
Tính hợp lí : 4^10 . 9^6 + 3^12 . 8^5 / 6^13 . 4 - 2^16 . 3^12
1.tính hợp lí
a) -4/15 *-3/8*15/-4*8
-2/3*4/19+5/3*4/19
-1/2*5/3+1/2*8/3
help me,please!=(((
1)tính hợp lí :
a/1/5-(1/2+3/4):5/2
b/1,5.(1/3-2/3)
c/9/10.23/11-1/11.9/10+9/10
tính bằng cách hợp lí {nếu có thể}
A=2/5+ -4/3 + {-1/2}
B=1/3-[{-5/4}-{1/4+3/8}]
C=15 1/4:{-5/7-25 1/4:{-5/7}
1. Tính hợp lí : A. (0.25)^3×32
B. (-0.125)^3.80^4
C. 8^2×4^5/2^20
D. 81^11×3^17/27^10×9^15
Tính hợp lí và chi tiết:
A) 53+3×52/-8
B) 103+5+102+53/63+3×62+33
Tính biểu thức sau :
\(\left(7-\dfrac{1}{2}-\dfrac{3}{4}\right):\left(5-\dfrac{1}{4}-\dfrac{5}{8}\right)\)
Tính một cách hợp lí :
\(065.78+2\dfrac{1}{5}.2020+0,35.78-2,2.2020\)
