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\(x:2-x\times0,2=25,2\)
\(x\times0,5-x\times0,2=25,2\)
\(x\times\left(0,5-0,2\right)=25,2\)
\(x\times0,3=25,2\)
\(x=25,2:0,3\)
\(x=84\)
~ Hok tốt ~
\(x\div2-x\times0,2=25,2\)
\(\Rightarrow x\times\frac{1}{2}-x\times\frac{1}{5}=25,2\)
\(\Rightarrow x\times\left(\frac{1}{2}-\frac{1}{5}\right)=25,2\)
\(\Rightarrow x\times0,3=25,2\)
\(\Rightarrow x=25,2\div0,3=84\)
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1,35 : x * 5 = 3
1, 35 : x = 3 x 5
1, 35 : x = 15
x = 1,35 : 15
x = 0,9
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1.
a, 19,5 - X x 6,3 = 11,625
X x 6,3 = 19,5 - 11,625 = 7,875
X = 7,875 : 6,3 = 1,25
b, 4,75 + X : 9,4 = 34,3666
X : 9,4 = 34,3666 - 4,75 = 29,6166
X = 29,6166 x 9,4 = 278,39604
2.Bạn hỏi diện tích nào?
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5x = 52 x 53
5x = 52+3
5x = 55
=> x = 5
Học tốt
\(\frac{x}{2}-\frac{x}{5}=25.2\)
\(\frac{5x}{10}-\frac{2x}{10}=25.2\)
\(\frac{5x-2x}{10}=25.2\)
\(\frac{3x}{10}=25.2\)
\(3x=10\times25.2\)
\(3x=252\)
\(x=252:3\)
\(x=84\)