\(-1\dfrac{1}{2}-0,75=\dfrac{-3}{2}-\dfrac{3}{4}=\dfrac{-9}{4}\)
\(-1\dfrac{1}{2}-0,75=-\dfrac{3}{2}-\dfrac{3}{4}=\dfrac{-3.2-3}{4}=\dfrac{-6-3}{4}=-\dfrac{9}{4}\)
\(\left(-\dfrac{2}{3}\right).0,75+1\dfrac{2}{3}:\left(-\dfrac{4}{9}\right)+\left(-\dfrac{1}{2}\right)^2\)
Thực hiện phép tính:
\(d,\dfrac{-5}{12}+0,75\)
\(e,\dfrac{5}{7}.12\dfrac{1}{2}-\dfrac{5}{7}.5\dfrac{1}{2}\)
Tìm x:
a) \(-\dfrac{3}{5}\) - x = -0,75
b) \(1\dfrac{4}{5}\) = -0,15 - x
c) x + \(\dfrac{1}{3}\) = \(\dfrac{2}{5}\) - ( \(-\dfrac{1}{3}\) )
\(\left(-0,75.x+\dfrac{5}{2}\right).\dfrac{4}{7}-\left(-\dfrac{1}{3}\right)=\dfrac{-5}{6}\)
\(\sqrt{\dfrac{4}{25}+|-\dfrac{4}{5}|-\dfrac{9}{5}\times\left(\dfrac{-1}{3}\right)}^2+0,75\)
Tính:
a/\(A=\left(-0,75-\dfrac{1}{4}\right):\left(-5\right)+\dfrac{1}{48}-\left(\dfrac{-1}{6}\right):\left(-3\right)\)
b/\(B=\left(\dfrac{6}{25}-1,24\right):\dfrac{3}{7}:\left[\left(3\dfrac{1}{2}-3\dfrac{2}{3}\right):\dfrac{1}{14}\right]\)
Tìm x : \(\dfrac{1}{2}-\left|2-3x\right|=\sqrt{\dfrac{19}{16}}-\sqrt{\left(-0,75\right)^2}\)
HELP ME!
tính
A( \(\dfrac{7}{8}-0,25\) ) \(:\left(\dfrac{5}{6}-0,75\right)^2\)
B) \(\dfrac{3}{4}.1\dfrac{4}{9}-\left(\dfrac{-3}{4}\right)\)
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
