(x -17) +52 =158
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\((x-17)+52=158\)
\(\Rightarrow x-17=158-52\)
\(\Rightarrow x-17=106\)
\(\Rightarrow x=106-17\)
\(\Rightarrow x=89\)
( x- 17 ) + 52 = 158
x - 17 = 158 - 52
x - 17 = 106
x = 106 + 7
x = 113
Vậy x = 113
( x : 23 + 45 ) : 67 = 8911
x : 23 + 45 = 8911 x 67
x : 23 + 45 = 597037
x : 23 = 597037 - 45
x : 23 = 596992
x = 596992 x 23
x = 13730816
Vậy x = 13730876
a) 135 - ( x + 37 ) = 80
( x + 37 ) = 135 - 80
( x + 37 ) = 55
x = 55 - 37
x = 18
b) ( x - 17 ) + 52 = 158
( x - 17 ) = 158 - 52
( x - 17 ) = 106
x = 106 + 17
x = 123
a) 135 - ( x + 37 ) = 80
x + 37 = 135 - 80
x + 37 = 55
x = 55 - 37
x = 18
b) ( x - 17 ) + 52 = 158
x - 17 = 158 - 52
x - 17 = 106
x = 106 + 17
x = 123
a) 135 - ( x + 32 ) = 80
x + 32 = 135 - 80
x + 32 = 55
x = 55 - 32
x = 23
b)( x - 17 ) + 52 = 158
x - 17 = 158 - 52
x - 17 = 106
x = 106 + 17
x = 123
c x : 17 + 83 = 297
x : 17 = 297 - 83
x : 17 = 214
x = 214 x 17
x = 3638
d) 9052: x - 56 = 17
9052 : x = 17 + 56
9052 : x = 73
x = 9052 : 73
x = \(\frac{1004}{17}\)
1/53+-1/106+-1/159=|x|/318
6/318+-3/318+-2/318=|x|/318
1/318=|x|/318
=>|x|=1
x=1 hoặc x=-1
=> \(\frac{1}{53}\)+ \(\frac{-1}{106}\)+\(\frac{-1}{159}\)= \(\frac{\left|x\right|}{318}\)
=> \(\frac{1}{318}\)= \(\frac{\left|x\right|}{318}\)
=> x thuộc {1; -1}
\(\left(1-\frac{52}{53}\right)+\left(\frac{105}{106}-1\right)+\left(\frac{158}{159}-1\right)=\frac{\left|x\right|}{318}\)
\(\Rightarrow\frac{1}{53}+\frac{-1}{106}+\frac{-1}{159}=\frac{\left|x\right|}{318}\)
\(\Rightarrow\frac{1}{318}=\frac{\left|x\right|}{318}\)
\(\Rightarrow\left|x\right|=1\)
\(\Rightarrow x=\pm1\)
Vậy..............................
3) 5.(x-15)-75=0
5.(x-15)=75
x-15=15
x=15+15
x=30
8) 315+(146-x)=491
146-x=491-315
146-x=176
x=146-176
x=-30
6) 6.x-5=600+13
6.x-5=613
6.x=613+5
6.x=618
x=618:6
x=103
11)(x-17):8+52=158
(x-17):8=158-52
(x-17):8=106
x-17=106.8
x-17=848
x=848+17
x=865
7) (x-47).5-115=0
(x-47).5=115
x-47=115:5
x-47=23
x=23+47
x=70
10) 135-5.(x+37)=80
5.(x+37)=135-80
5(x+37)=55
x+37=55:5
x+37=11
x=11-37
x=26
13) 320:y-10=5.48:24
320:y-10=240:24
320:y-10=10
320:y=10+10
320:y=20
y=320:20
y=16
1532565 x 0 , 14 = 214559,1
17 x 17 x 3, 14 = 907,46
7950 : 50 x 158 = 25122
\(1532565x0,14=214559,1\)
\(17x17x3,14=907,46\)
\(7950:50x158=25122\)
^v^ chúc bạn học tốt
(x - 17) + 52 = 158
x - 17 = 158 - 52
x - 17 = 106
x = 106 + 17
x = 123
(x-17)+52=158
x-17=158-52
x-17=106
x=106+17
x=123.