96 + 98 x 96 + 1 x 96
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=> 98/97 - 97/96 + 1/96 x 1/97
=>(1/97+97/97) - (1/96+96/96) + 1/96x1/97
=>(1/97+1) - (1/96 + 1 ) +1/96x1/97
=>1/97+1-1/96-1+1/96x1/97
=>1/97-1/96+1-1 +1/96x1/97
=>1/96x1/97+1/97-1/96
đoạn sau bạn tự làm nhé
\(x=96-12=84.\)
\(x=96-12=84\)
\(x=98-78=20\)
\(x=69-27=42\)
\(x=85-20=65\)
\(x=129-85=44\)
\(x=201-129=72\)
\(x=98+129=227\)
96 - x = 12
x = 96 - 12
x = 84
78 + x = 98
x = 98 - 78
x = 20
x + 27 = 69
x = 69 - 27
x = 42
x + 20 = 85
x = 85 - 20
x = 65
x + 85 = 129
x = 129 - 85
x = 44
x + 129 = 201
x = 201 - 129
x = 72
x - 129 = 98
x = 129 - 98
x = 31
k mình nha , Thank you !
`(x+1)/99+(x+2)/98+(x+3)/97+(x+4)/96=-4`
`=>(x+1)/99+1+(x+2)/98+1+(x+3)/97+1+(x+4)/96+1=-4+4`
`=>(x+100)/99+(x+100)/98+(x+100)/97+(x+100)/96=0`
`=>(x+100)(1/99+1/98+1/97+1/96)=0`
`=>x+100=0` (Vì `1/99+1/98+1/97+1/96\ne0`)
`=>x=-100`
Vậy ...
`#`𝐷𝑎𝑖𝑙𝑧𝑖𝑒𝑙
\(\dfrac{x+1}{99}+\dfrac{x+2}{98}+\dfrac{x+3}{97}+\dfrac{x+4}{96}=-4\\ \dfrac{x+1}{99}+\dfrac{x+2}{98}+\dfrac{x+3}{97}+\dfrac{x+4}{96}+4=0\\ \left(\dfrac{x+1}{99}+1\right)+\left(\dfrac{x+2}{98}+1\right)+\left(\dfrac{x+3}{97}+1\right)+\left(\dfrac{x+4}{96}+1\right)=0\\ \dfrac{x+100}{99}+\dfrac{x+100}{98}+\dfrac{x+100}{97}+\dfrac{x+100}{96}=0\\ \left(x+100\right)\left(\dfrac{1}{99}+\dfrac{1}{98}+\dfrac{1}{97}+\dfrac{1}{96}\right)=0\)
mà `1/99+1/98+1/97+1/96 \ne 0`
nên `x+100=0`
`x=-100`
\(\frac{x+2}{98}+1+\frac{x+3}{97}+1=\frac{x+4}{96}+1+\frac{x+5}{95}+1\)
\(\Leftrightarrow\frac{x+100}{98}+\frac{x+100}{97}=\frac{x+100}{96}+\frac{x+100}{95}\)
\(\Leftrightarrow\frac{x+100}{98}+\frac{x+100}{97}-\frac{x+100}{96}-\frac{x+100}{95}=0\)
\(\Leftrightarrow\left(x+100\right)\left(\frac{1}{98}+\frac{1}{97}-\frac{1}{96}-\frac{1}{95}\right)=0\)
\(\Leftrightarrow x+100=0\left(\frac{1}{98}+\frac{1}{97}-\frac{1}{96}-\frac{1}{95}\ne0\right)\)
<=> x=-100
ko chép đề nhé
\(\frac{x+100}{98}+\frac{x+100}{97}=\frac{x+100}{96}+\frac{x+100}{95} \)
=> \((x+100)(\frac{1}{98}+\frac{1}{97}-\frac{1}{96}-\frac{1}{95})=0\)
vì \((\frac{1}{98}+\frac{1}{97}-\frac{1}{96}-\frac{1}{95}) khác 0\)
=>\(x+100=0\)
=>x=-100
\(96+98\times96+1\times96\)
\(=1\times96+98\times96+1\times96\)
\(=\left(1+1+98\right)\times96\)
\(=100\times96\)
\(=9600\)
96 + 98 x 96 + 1 x 96
= 96 x ( 1 + 98 + 1 )
= 96 x 100
= 9600
Ủng hộ nha!