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x - 4867 = ( 175 . 2050 . 70 ) : 25 + 23
x - 4867 = ( 358750 . 70 ) : 25 + 23
x - 4867 = 25112500 + 23
x - 4867 = 1004500 + 23
x- 4867 = 1004523
x = 1004523 + 4867
x = 1009390
\(\text{Bài 1 :}\)
a) 2436 : x = 12
=> x = 2436 : 12 = 203
Vậy x = 203
b) 6x – 5 = 613
=> 6x = 613 + 5 = 618
=> x = 618 : 6 = 103
Vậy x = 103
c)12 . (x – 1) = 0 |
=> x - 1 = 0
=> x = 1
Vậy x = 1
0 : x = 0
=> x ∈ N*
Vậy x ∈ N*
\(\text{Bài 2 :}\)
a) (x – 47) – 115 = 0 => x - 47 = 115 => x = 115 + 47 = 162 Vậy x = 162 |
b)(x + 74) – 318 = 200 |
=> x + 74 = 518
=> x = 444
Vậy x = 444
c) 315 + (146 – x) =401 => 146 - x = 401 - 315 = 86 => x = 146 - 86 = 60 Vậy x = 60
|
\(92.4-27=\frac{x+350}{x}+315\)
\(< =>368-27=\frac{x+350}{x}+315\)
\(< =>341=\frac{x+350}{x}+315\)
\(\frac{x+350}{x}=341-315\)
\(\frac{x+350}{x}=26\)
\(\left(x+350\right):x=26\)
\(x+350=x.26\)
\(350=x.25\)
\(x=350:25\)
\(x=14.\)
Đáp số : 14.
92.4 - 27 = ( x+ 350) / x +315
hay 341 = (x+ 350) / x +315
=> 26 = (x+ 350) / x
=> 26x = x + 350
=> 25x = 350
=> x= 14
\(92×4-27=315+\frac{x+350}{x}\Leftrightarrow368-27=315+\frac{x+350}{x}\Leftrightarrow368-27-315=\frac{x+35}{x}\)\(\Leftrightarrow26=\frac{x+350}{x}\Leftrightarrow26-\frac{x+350}{x}=0\Leftrightarrow\frac{25x-350}{x}=0\Leftrightarrow25x-350=0\Leftrightarrow25x=350\Leftrightarrow x=14\)
\(697:\frac{15x+364}{x}=17\)
\(\frac{15x+364}{x}=697:17=41\)
\(\frac{15x}{x}+\frac{364}{x}=41\)
\(15+\frac{364}{x}=41\)
\(\frac{364}{x}=41-15=26\)
\(x=364:26=14\)
\(92.4-27=\frac{x+350}{x}+315\)
\(\frac{x+350}{x}+315=341\)
\(\frac{x+350}{x}=341-315=26\)
\(\frac{x}{x}+\frac{350}{x}=26\)
\(1+\frac{350}{x}=26\)
\(\frac{350}{x}=26-1=25\)
\(x=350:25=14\)
điều kiện x khác 0
suy ra: 341= (x+350)/x +315
26= (x+350)/x
26x = x +350
suy ra x=14
\(92.4-27=\dfrac{x+350}{x}+315\)
\(\Rightarrow366=1+\dfrac{350}{x}+315\)
\(\Rightarrow366=316+\dfrac{350}{x}\)
\(\Rightarrow50=350:x\)
\(\Rightarrow x=7\)
x+b.0=315
x+0=315
x= 315-0
x=315