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các bn nhớ tíck cho nick thảo đó
nếu không bt nick đó thì nhìn lên bảng xếp hạng nha
=3 =3 =3 =3 =3
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10x + 90 = 200
10x = 200 - 90
10x = 110
x = 110 : 10
x = 11
~ Chúc học tốt ~
Ai ngang qua xin để lại 1 L - I - K - E
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6x + 9 =32
6x = 32 - 9
6x =23
x = 3,333333333.......... đề sai
x - 90 + 100 = 290
x - 90 = 290 - 100
x-90 =190
x =280
a + 1 - 3 = 6
a+1 = 6 + 3
a+1 = 9
a =8
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\(5\times95+5\times4+5\)
\(=5\times\left(95+4+1\right)\)
\(=5\times100\)
\(=500\)
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a) \(x-\frac{1}{4}-\frac{5}{3}\text{x}\frac{1}{2}=x-\frac{1}{4}-\frac{5\text{x}1}{3\text{x}2}\)
\(\Rightarrow x-\frac{1}{4}-\frac{5}{6}=x-\left(\frac{1}{4}+\frac{5}{6}\right)\)
\(\Rightarrow x-\left(\frac{3}{12}+\frac{10}{12}\right)=x-\frac{13}{12}\)
b) \(x:\frac{2}{3}-\frac{1}{2}+\frac{3}{4}=\frac{3}{2}x-\frac{1}{2}+\frac{3}{4}\)
\(\Rightarrow\frac{3x}{2}-\frac{1}{2}+\frac{3}{4}=\frac{3x-1}{2}+\frac{3}{4}\)
\(\Rightarrow\frac{\left(3x-1\right)\text{x}2}{4}+\frac{3}{4}=\frac{\left(3x-1\right)\text{x}2+3}{4}\)
\(\Rightarrow\frac{6x-2+3}{4}=\frac{6x+1}{4}\)
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A\(\frac{7}{8}+\frac{7}{12}+\frac{9}{8}+\frac{5}{12}\)
\(=\left(\frac{7}{12}+\frac{5}{12}\right)+\left(\frac{7}{8}+\frac{9}{8}\right)\)
\(=1+2\)
\(=3\)
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x:8/11=11/3
x=11/3X8/11
x=8/3
b) 2/5:x=1/4
x=2/5:1/4
x=8/5
c)4/5+5/7:x=1/6=?
ai tích mình tích lại
\(4.4.5\)
\(=16.5\)
\(=80\)
nha
chúc bn học giỏi!
4 x 4 x 5
= 80
k mk nha