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\(\frac{x+140}{x}+260=21+65×4\)
\(\frac{x+140}{x}+260=21+260\)
\(\frac{x+140}{x}=21\)
\(\left(x+140\right):x=21\)
x + 140=21× x
140= 21× X - X
140= 21×X-X×1
140=(21-1)×X
140=20×X
X=140:20
X=7
(x + 20) : 99 = (1004 + 1) x 2/99
=> 99x + 1980 = 1005 x 2/99
=> 99x = 99495/2 - 1980
=> 99x = 95535/2
=> x = 965/2
b. \(\frac{x+140}{x}\) + 260 = 21 + 65 x 4
=> \(\frac{x+140}{x}\)= 21 + 260 - 260
=> \(\frac{x+140}{x}\)= 21
=> 21x = x + 140
=> 20x = 140
=> x = 7
\(71+65\cdot4=\frac{x+140}{x}+260\)
\(\Rightarrow71+260=\frac{x}{x}+\frac{140}{x}+260\)
\(\Rightarrow71=1+\frac{140}{x}\)
\(\Rightarrow\frac{140}{x}=70\)
\(\Rightarrow x=2\)
71+65*4=x+140 +260
x
=>71+260= x + 140 +260
x x
=>71=1+ 140
x
=> 71-1 = 140
x
=> 70=140:x
=>x=140:70=2
#)Giải :
\(71+65.4=\frac{x+140}{x}+260\)
\(\frac{x+140}{x}+260=71+65.4\)
\(\frac{x+140}{x}+260=71+260\)
\(\frac{x+140}{x}=71\)
\(\frac{x}{x}+\frac{140}{x}=71\)
\(1+\frac{140}{x}=71\)
\(\frac{140}{x}=71-1\)
\(\frac{140}{x}=70\)
\(x=140:70\)
\(x=2\)
#~Will~be~Pens~#
\(71+65.4=\frac{x+140}{x}+260\)
\(\Rightarrow\frac{x+140}{x}+260=71+65.4\)
\(\frac{x+140}{x}+260=331\)
\(\frac{x+140}{x}=331-260=71\)
\(\frac{x}{x}+\frac{140}{x}=71\)
\(1+\frac{140}{x}=71\)
\(\frac{140}{x}=71-1=70\)
\(x=\frac{140}{70}=2\)
Vậy x=2
Để mình giải lần nữa cho:
71 + 65 x 4 = \(\frac{x+140}{x}+260\)
71 + 260 = \(\frac{x}{x}+\frac{140}{x}+260\)
71 = \(1+\frac{140}{x}\)
\(71-1\) = \(\frac{140}{x}\)
70 = \(\frac{140}{x}\)
x = 140 : 70
x = 2
cho mk 1 cái l-i-k-e đi minh phương cái này mk giải đầu mà
\(71+65.4=\frac{x+140}{x}+260\)
\(71+260=\frac{x}{x}+\frac{140}{x}+260\)
=> \(1+\frac{140}{x}=71\)
=> \(\frac{140}{x}=71-1=70\)
=> \(\frac{140}{x}=\frac{140}{2}\)
=> x = 2
Vậy x = 2
71 + 65 x 4 = x + 140/x + 260
x + 140/x + 260 = 71 + 65 x 4
x + 140/x + 260 = 71 + 260
x + 140/x = 71
x/x + 140/x = 71
1 + 140/x = 71
140/x = 71 - 1
140/x = 70
x = 140/70
x = 2
\(71+65\times4=\frac{x+140}{x}+260\)
\(71+260=\frac{x}{x}+\frac{140}{x}+260\)
\(71\) \(=1+\frac{140}{x}\)
\(70\) \(=\frac{140}{x}\)
\(x\) \(=2\)