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![](https://rs.olm.vn/images/avt/0.png?1311)
\(125879-\left(x-2597\right)-5879=52369\)
\(125879-\left(x-2597\right)=52369+5879\)
\(125879-\left(x-2597\right)=58248\)
\(x-2597=125879-58248\)
\(x-2597=67631\)
\(x=65034\)
125879 - (x - 2597) - 5879 = 52369
120000 - (x - 2597) = 52369
x - 2597 = 120000 - 52369
x - 2597 = 67631
x = 67631 + 2597
x = 70228
![](https://rs.olm.vn/images/avt/0.png?1311)
125879 - (\(x\) - 2597) - 5879 = 52369
125879 - \(x\) + 2597 - 5879 = 52369
(125879 - 5879) - \(x\) + 2597 = 52369
120 000 - \(x\) + 2597 = 52369
122597 - \(x\) = 52369
\(x\) = 122597 - 52369
\(x\) = 70228
![](https://rs.olm.vn/images/avt/0.png?1311)
a, (x-3418)+1968=1968+2582
x-3418 =1968+2582-1968
x-3418 =2582
x =2582+3418
x =6000
b,12346+(x+975)=3957+3975
12346+(x+975)=7932
x+975=12346-7932
x+975=4414
x =4414-975
x =3439
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 1968 x 15 + 1968 x 84 + 1968
= 1968 x 15 + 1968 x 84 + 1968 x 1
= 1968 x (15 + 84 + 1)
= 1968 x 100 = 196800
b) 6412 + 5378 + 3582 + 4628
= (6412 + 5378) + (3582 + 4628)
= 11790 + 8210
= 20000
c) 178 x 101 - 178
= 178 x 101 - 178 x 1
= 178 x (101 - 1)
= 178 x 100
= 17800
d) 153 x 8 + 153 + 153
= 153 x 8 + 153 x 1 + 153 x 1
= 153 x (8 + 1 + 1)
= 153 x 10
= 1530
![](https://rs.olm.vn/images/avt/0.png?1311)
a: \(1968\cdot15+1968\cdot84+1968\)
\(=1968\left(15+84+1\right)\)
\(=1968\cdot100=196800\)
b: \(6412+5378+3582+4628\)
\(=\left(6412+4628\right)+\left(5378+3582\right)\)
\(=11040+8960=20000\)
c: \(178\cdot101-178\)
\(=178\cdot101-178\cdot1\)
\(=178\left(101-1\right)=178\cdot100=17800\)
d: \(153\cdot8+153+153\)
\(=153\left(8+1+1\right)\)
\(=153\cdot10=1530\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
X x 23 + X x 35 - 1968 = 10270
X x ( 23 + 35 ) - 1968 = 10270
X x 58 - 1968 = 10270
X x 58 = 10270 + 1968
X x 58 = 12238
X = 12238 : 58
X = 211
X x 23 + X x 35 - 1968 = 10270
X x ( 23 + 35 ) - 1968 = 10270
X x 58 - 1968 = 10270
X x 58 = 10270 + 1968
X x 58 = 12238
X = 12238 : 58
X = 211
![](https://rs.olm.vn/images/avt/0.png?1311)
X * 23 + X * 35 - 1968 = 10270
X*(23+35)-1968=10270
X* 58 - 1968=10270
X*58 = 10270+1968
X* 58 = 12238
X = 12238:58
X =211