1) 957-(x+336)=428
957 – x – 336 = 428
– x = 428 + 336 – 957
-x = -193
x = 193
2) 325-(x-617)=219
325 – x + 617 = 219
– x = 219 – 617 – 325
-x = -723
x = 723
3)468-(259-x)=382
68 – 259 + x = 382
x = 382 + 259 – 68
x = 573
4) (3800-x)+1129=4758
3800 – x + 1129 = 4758
– x = 4758 – 1129 – 3800
-x = -171
x = 171
5)53874-x*213=52383
-x * 213 = 52383-53874
-x * 213 = -1491
-x= -1491/213
-x= -7
х=7
6)5*(145+x)=735
725 + 5x = 735
5x = 735 – 725
5x = 10
x = 2
7)(x-490)*3=126
раскроем скобки
3x-1470 = 126
3x-1596 = 0
3x = 1596
x = 532
8)(x+201):5=1635
x+201=1635*5
x+201=8175
x=8175-201
х=7974
9)8100:(x:36)=90
(x:36)=8100:90
x:36=90
x=90*36
х=3240
1) 957-(x+336)=428
957 – x – 336 = 428
– x = 428 + 336 – 957
-x = -193
x = 193
2) 325-(x-617)=219
325 – x + 617 = 219
– x = 219 – 617 – 325
-x = -723
x = 723
3)468-(259-x)=382
68 – 259 + x = 382
x = 382 + 259 – 68
x = 573
4) (3800-x)+1129=4758
3800 – x + 1129 = 4758
– x = 4758 – 1129 – 3800
-x = -171
x = 171
5)53874-x*213=52383
-x * 213 = 52383-53874
-x * 213 = -1491
-x= -1491/213
-x= -7
х=7
6)5*(145+x)=735
725 + 5x = 735
5x = 735 – 725
5x = 10
x = 2
7)(x-490)*3=126
раскроем скобки
3x-1470 = 126
3x-1596 = 0
3x = 1596
x = 532
8)(x+201):5=1635
x+201=1635*5
x+201=8175
x=8175-201
х=7974
9)8100:(x:36)=90
(x:36)=8100:90
x:36=90
x=90*36
х=3240