=(11/24 + 13/24) + (-5/41 - 36/41) + 0.5
= 1 + (-1) + 0.5
= 0 + 0.5
= 0.5
Thực hiện phép tính (Tính hợp lý nếu có thể).
a) $\dfrac{11}{24}-\dfrac{5}{41}+\dfrac{13}{24}+0,5-\dfrac{36}{41}$.
b) $\dfrac{1}{2} \cdot \dfrac{3}{4}+\dfrac{1}{2} \cdot \dfrac{1}{4}+\dfrac{1}{2}$.
c) $\Big(\dfrac{-3}{4}\Big)^2:\Big(\dfrac{-1}{4}\Big)^2+9 \cdot\Big(\dfrac{-1}{9}\Big)+\Big( \dfrac{-3}{2} \Big)$.
d) $\sqrt{0,25} \cdot(-3)^3-\sqrt{\dfrac{1}{81}}:\Big(\dfrac{-1}{3}\Big)^3$.
1. a) \(\dfrac{5}{3}\) . \(\dfrac{11}{7}\) - \(\dfrac{5}{7}\) . \(\dfrac{5}{3}\)
b) (0,125)\(^{16}\). (-8)\(^{16}\)
c) \(\dfrac{9^2.9^3}{3^9}\)
d) \(\dfrac{9}{24}\) - \(\dfrac{7}{41}\) + \(\dfrac{15}{24}\) + 0,75 - \(\dfrac{34}{41}\)
e) \(5\dfrac{2}{7}\) . ( \(-\dfrac{1}{3}\)) - \(2\dfrac{2}{7}\) . (\(-\dfrac{1}{3}\))
2. a) \(\dfrac{3}{4}\) + \(\dfrac{2}{3}x\) = \(\dfrac{1}{2}\)
b) (2x - 1)\(^2\) = 25
c) | x + 5 | - 6 = 9
\(\dfrac{9}{24}-\dfrac{7}{41}+\dfrac{15}{24}+0,75-\dfrac{34}{41}\)
11/24-5/41+13/24+0.5-36/41
Thực hiện phép tính hợp lý (nếu có thể) :
a) (\(31\dfrac{6}{13}\) + \(5\dfrac{9}{41}\) ) - \(36\dfrac{6}{13}\)
b) \(\dfrac{5}{3}\) +( \(\dfrac{-2}{7}\) ) - (-1,2)
c) 0,25 + \(\dfrac{3}{5}\) - (\(\dfrac{1}{8}\) - \(\dfrac{2}{5}\) + \(1\dfrac{1}{4}\) )
\(\dfrac{12}{25}\)-\(\dfrac{5}{41}\)+\(\dfrac{3}{25}\)+0,5-\(\dfrac{36}{41}\)
\(\left(\dfrac{1}{3}+\dfrac{12}{67}+\dfrac{13}{41}\right)-\left(\dfrac{79}{67}-\dfrac{28}{41}\right)\)
\(\left(\dfrac{15}{4}-5x\right)\cdot\left(9x^2-4\right)=0\)
\(\sqrt{x-2}+\dfrac{1}{3}=1\)
Tính nhanh
11/24-5/41+13/24+0,5-36/41
