( 17/10+7-8,7) : (23/4 -11/2+ 9/25)x(12,98x0,25)+12,5 = ?
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(17/10+7-8,7):(23/4-11/2+9/25)x(12,98x0,25)+12,5
(17/10 + 7 - 8,7) : (23/4 - 11/2 + 9/25) x (12,98 x 0,25) + 12,5
= (1,7 + 7 - 8,7) : (23/4 - 11/2 + 9/25) x (12,98 x 0,25) + 12,5
= (8,7 - 8,7) : (23/4 - 11/2 + 9/25) x (12,98 x 0,25) + 12,5
= 0 : (23/4 - 11/2 + 9/25) x (12,98 x 0,25) + 12,5
= 0 + 12,5
= 12,5
\(\left(\frac{17}{10}+7-8,7\right):\left(\frac{23}{4}-\frac{11}{2}+\frac{9}{25}\right)\)\(\times\left(12,98\times0,25\right)+12,5\)
\(=0\div\left(\frac{23}{4}-\frac{11}{2}+\frac{9}{25}\right)\times\left(12,98\times0,25\right)+12,5\)
\(=0+12,5\)
\(=12,5\)
@ OreYinn
tính giá trị biểu thức :
A, ( 17 /10 + 7 - 8,7 ) : ( 23/4 - 11/ 2 + 9/25) x( 12, 98x 0,25 ) + 12,5
a,( 17/10 + 7 - 8,7 ) : ( 23/4 - 11/2 + 9/25 ) x ( 12,98 x 0,25 ) + 12,5
b, ( x - 1/2 ) x 5/3 = 7/4 - 1/2
c, ( 1+4 +7+...............+ 100 ) : x = 17
Giup minh voi , ban nao ma nhanh tay minh se cho 3
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tính giá trị biểu thức left(frac{17}{10}+7-8,7right):left(frac{23}{4}-frac{11}{2}+frac{9}{25}right)xleft(12,98x0,25right)+12,51frac{2}{24}x5frac{2}{5}x2x3frac{7}{9}x2xfrac{2}{17} 2frac{2}{17}x1frac{1}{24}x5frac{2}{5}x3frac{7}{9}x23xleft(frac{1}{7}+frac{1}{3}-frac{3}{14}right):frac{11}{14}left(1frac{3}{2}+2frac{1}{5}right)x1frac{1}{10}+left(1frac{7}{10}-frac{4}{5}right):frac{3}{7}
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tính giá trị biểu thức
\(\left(\frac{17}{10}+7-8,7\right):\left(\frac{23}{4}-\frac{11}{2}+\frac{9}{25}\right)x\left(12,98x0,25\right)+12,5\)
\(1\frac{2}{24}x5\frac{2}{5}x2x3\frac{7}{9}x2x\frac{2}{17}\)
\(2\frac{2}{17}x1\frac{1}{24}x5\frac{2}{5}x3\frac{7}{9}x2\)
\(3x\left(\frac{1}{7}+\frac{1}{3}-\frac{3}{14}\right):\frac{11}{14}\)
\(\left(1\frac{3}{2}+2\frac{1}{5}\right)x1\frac{1}{10}+\left(1\frac{7}{10}-\frac{4}{5}\right):\frac{3}{7}\)
a (17/10*7-8,7)/(23/4-11/2+9/24)*12,98*0,25+12,5
b 1 2/24*5 2/5*2*3 7/9*2*2/17
(17/10+7-8,7): (23/4-11/2+9/25).(12,98.0,25) =?
a)\(\left(\dfrac{17}{10}+7-8,7\right)\div\left(\dfrac{23}{4}-\dfrac{11}{4}+\dfrac{9}{25}\right)\times\left(12,98\times0,25\right)+12,5\)
b)\(1\dfrac{2}{24}\times5\dfrac{2}{5}\times2\times3\dfrac{7}{9}\times2\times\dfrac{2}{17}\)
a: \(=\left(\dfrac{17}{10}+\dfrac{70}{10}-\dfrac{87}{10}\right):\left(\dfrac{23}{4}-\dfrac{11}{4}+\dfrac{9}{25}\right)\cdot\left(12,98\cdot0,25\right)+12,5\)
\(=0:\left(3+\dfrac{9}{25}\right)\cdot\left(12,98+0,25\right)+12,5\)
=12,5
b: \(=\dfrac{13}{12}\cdot\dfrac{27}{5}\cdot2\cdot\dfrac{34}{9}\cdot2\cdot\dfrac{2}{17}\)
\(=\dfrac{13}{12}\cdot2\cdot\dfrac{27}{5}\cdot\dfrac{34}{9}\cdot\dfrac{4}{17}\)
\(=\dfrac{13}{6}\cdot\dfrac{27}{5}\cdot\dfrac{8}{9}=\dfrac{8}{6}\cdot3\cdot\dfrac{13}{5}=4\cdot\dfrac{13}{5}=\dfrac{52}{5}\)
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(\(\frac{17}{10}\)+7 - 8,7) : (\(\frac{23}{4}\)-\(\frac{11}{2}\)+\(\frac{9}{25}\)x ( 12,98 x 0,25 ) + 12,5
1\(\frac{2}{24}\)x 5\(\frac{2}{5}\)x 2 x 3\(\frac{7}{9}\)x 2 x\(\frac{2}{17}\)
Ai giải đúng nhanh mình tick cho
6/ tinh gia tri cua bieu thuc M, voi a = 119 va b = 0, biet: M = b: (119 x a + 2005) + (119 : a - b x 2005)
7/ Tinh gia tri bieu thuc a) [17/10 + 7 - 8,7 ] : [ 23/4 - 11/2 + 9/25 ] x [ 12,98 x 0,25 ] + 12,5
ai lam nhanh nhat minh tich cho