150x150
160x180x190x170x123
500x1000x1234
500:5
707x101x555
5x5+5+5+5+5+5+5+5+5+5+5+5+5+5+5+5
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5 + 5 + 5 + 5 + 5 x 5 + 5
= 5 x 5 + 5 x 5 + 5
= 25 + 25 + 5
= 50 + 5
= 55
= 5 + 25 - 5 + 25 : 5
= 5 + 25 - 5 + 5
= 30 - 5 + 5
= 25 + 5
= 30
a: =9/11(7/4+5/4)=9/11x3=27/11
b: \(=\dfrac{28}{5}\cdot\dfrac{5}{8}\cdot\dfrac{5}{4}=\dfrac{28}{8}\cdot\dfrac{5}{4}=\dfrac{140}{32}=\dfrac{35}{8}\)
c: \(=\dfrac{2}{6}+\dfrac{4}{5}\cdot\dfrac{6}{5}-\dfrac{2}{5}=\dfrac{67}{75}\)
a,=(7/4+5/4):11/9
=3:11/9
=27/11
b,=28/5.5/4.5/8
=7.5/8
=35/8
c,=1/3+24/25-2/5
=97/75-2/5
=67/75
\(\left(\dfrac{1}{5}\right)^5\cdot5^5+\dfrac{8^{13}}{4^{18}}\)
\(=1+\dfrac{2^{39}}{2^{36}}\)
=9
150x150 = 22500
160x180x190x170x123=114419520000
500x1000x1234=617000000
500:5=100
707x101x555 =39630885
5x5+5+5+5+5+5+5+5+5+5+5+5+5+5+5+5=100
thanks