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(2,7+1,8)*2*1,5=4,5*2*1,5 =9*1,5 =13,5 (6/5*3/4)*2*2/3=9/10*2*2/3 =9/5*2/3 =6/5 2,7*1,8*1,5=7,29 6/5*3/4*2/3=3/5 16*16*6=1536
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\(\left(2,7+1,8\right).2.1,5=13,5\)
\(\left(\frac{6}{5}.\frac{3}{4}\right).2.\frac{2}{3}=1,2\)
\(2,7.1,8.1,5=7,29\)
\(\frac{6}{5}.\frac{3}{4}.\frac{2}{3}=0,6\)
\(16.16.6=1536\)
= 13,5.
= \(\frac{6}{5}\).
= 7,29.
= \(\frac{3}{5}\).
= 1536.
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\(0,3.\left(x.\frac{1}{3}\right)=\frac{1}{2}.\left(0,81:2,7\right)\)
\(0,3.\left(x.\frac{1}{3}\right)=\frac{1}{2}.\frac{3}{10}\)
\(0,3.\left(x.\frac{1}{3}\right)=\frac{3}{20}\)
\(\frac{1}{3}x=\frac{3}{20}:0,3\)
\(\frac{1}{3}x=\frac{1}{2}\)
\(x=\frac{1}{2}:\frac{1}{3}\)
\(x=\frac{3}{2}\)
Vậy x = 3/2
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0,9 x 2 + 1,8 x 3 + 2,7 x 4
=>1,8 + 5,4 + 10,8
=>7,2 + 10,8 = 18
= 0,9 x 2 + 0,9 x 2 x 3 + 0,9 x 3 x 4
= 0,9 x 2 + 0,9 x 6 + 0,9 x 12
= 0,9 x (2 + 6 + 12)
= 0,9 x 20
= 0,9 x 10 x 2
= 9 x 2
= 18
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0,9 nhân 2 cộng 1,8 nhân 3 cộng 2,7 nhân 4
= 0,9x2+1,8x3+2,7x4
=18
k nha!
1,111111111
3 : 2,7 = 1,111.............