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\(\frac{16,2.3,7+5,7.16,2-7,8.4,8-4,6.7,8}{11,2+12,3+13,4-12,6-11,5-10,4}\)
\(=\)\(\frac{16,2\left(3,7+5,7\right)-7,8\left(4,8-4,6\right)}{\left(11,2+12,3+13,4\right)-\left(12,6+11,5+10,4\right)}\)
\(=\)\(\frac{16,2.9-7,8.0,2}{36,9-34,5}\)
\(=\)\(\frac{145,8-1,56}{2,4}\)
\(=\)\(\frac{144,24}{2,4}\)
\(=\)\(60,1\)
\(\text{Học tốt!!!}\)
a) \(2\dfrac{4}{9}+6\dfrac{7}{11}+7\dfrac{5}{9}+13\dfrac{4}{11}\)
\(=2+\dfrac{4}{9}+6+\dfrac{7}{11}+7+\dfrac{5}{9}+13+\dfrac{4}{11}\)
\(=\left(2+6+7+13\right)+\left(\dfrac{4}{9}+\dfrac{5}{9}\right)+\left(\dfrac{7}{11}+\dfrac{4}{11}\right)\)
\(=28+1+1\)
\(=30\)
b) \(\dfrac{3}{4}+\dfrac{1}{2}\times\dfrac{12}{5}-1\dfrac{1}{2}\)
\(=\dfrac{3}{4}+\dfrac{1}{2}-1-\dfrac{1}{2}\)
\(=\dfrac{3}{4}-1\)
\(=\dfrac{3}{4}-\dfrac{4}{4}\)
\(=-\dfrac{1}{4}\)
0,56 : 0,1 + 0,57 : 0,1 - 0,3
= ( 0,56 + 0,57 ) : 0,1 - 0,3
= 1,13 : 0,1 - 0,3
= 11,3 - 0,3
= 11
1,
0,56 : 0,1 + 0,57 :0,1 - 0,3
= ( 0,56 + 0,57-0,3 ) : 0,1
= 1 : 0,1
= 0,1
a)18,3-13,4-4,6=18,3-(13,4+4,6)=18,3-18=0,3
b)118,76-(18,26+30,5)=118,76-18,26-30,5=(118,76-18,26)-30,5=100,5-30,5=70
a, =18,3-(13,4+4,6)
=18,3-18
=0,3
b,=118,76-18,26-30,5
=100,5-30,5=70
**** mk nhé
\(5,3\times6,7+\times6,7\times4,6+6,7:10\\ =5,3\times6,7+6,7\times4,6+\times6,7:\dfrac{10}{1}\\ =\times5,3\times6,7+6,7\times4,6+6,7\times\dfrac{1}{10}\\ =5,3\times6,7+6,7\times4,6\times+6,7\times0,1\\ =6,7\times\left(5,3+4,6+0,1\right)\\ =6,7\times10\\ =67\)
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\(\frac{\text{5,7 x 16,2+ 16,2 x 3,7 - 6,2 x 4,6}}{\text{13,4 + 12,3+ 11,2 - 10,4 - 11,5 -12,6 - 0,4}}\)
\(=\frac{\text{16,2x(3,7+5,7)- 28,52}}{\text{13+0,4 + 12+0,3+ 11+0,2 - 10+0,4 - 11-0,5 -12-0,6 - 0,4}}\)
\(=\frac{\text{16,2x9,4- 28,52}}{\text{13+}\left(0,4-0,4\right)+\left(12-12\right)+\left(11-11\right)+0,2-0,6-0,5-0,4}\)
\(=\frac{152,28-28,52}{13,2-\left(0,4+0,5+0,6\right)}\)
\(=\frac{123,76}{13,2-1,5}=\frac{123,76}{11,7}\)
Làm lại nek:
\(\frac{\text{5,7 x 16,2+ 16,2 x 3,7 - 16,2 x 4,6}}{\text{13,4 + 12,3+ 11,2 - 10,4 - 11,5 -12,6 - 0,4}}\)
\(=\frac{16,2.\left(5,7+3,7-4,6\right)}{\text{13+0,4 + 12+0,3+ 11+0,2 - 10+0,4 - 11-0,5 -12-0,6 - 0,4}}\)
\(=\frac{16,2x4.8}{\text{13+}\left(0,4-0,4\right)+\left(12-12\right)+\left(11-11\right)+0,2-0,6-0,5-0,4}\)
\(=\frac{77,76}{13,2-\left(0,4+0,5+0,6\right)}\)
\(\frac{77,76}{13,2-1,5}=\frac{77,76}{11,7}\)
A) (13,4.6,75:6,7) + 4,6
= (90,45:6,7) + 4,6
= 13,5 + 4,6
= 18.1
B) 13,4.6,75 : (6,7+4,6)
= (13,4.6,75) : (6,7+4,6)
= 90,45 : 11,3
= 8,004424...
a)
=13,5+4,6
=18,1
b)
=90,45/11,3
=8,004424779