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6060:\(\frac{50.x+20}{x}\)= 101
Tìm x
6060 : [( 50x + 20 ) : x ] = 101
Tìm x biết : 1/1.3+ 1/3.5+ 1/5.7+...+ 1/x.(x+2)=50/101.
x+2.x+3.x+4.x+...+100.x=6060
2020 x 0,56 + 0,34 x 6060 + 8080 x 0,85 + 2020 x 5,02 =
2020 x 0,56 + 0,36 x 6060 + 8080 x 0,85 + 2020 x 5,02
( 1 + 2 + 4 + 6 + 8 + ... + 512 ) x ( 101 x 102 - 101 x 101 - 50 - 51 )
\(\frac{10}{11}x\frac{12}{13}:\frac{50}{51}-\frac{19}{20}x\frac{12}{13}:\frac{101}{102}+\frac{99}{100}\)
x+(x+1)+(x+2)+(x+3)+...+(x+100)=6060