152х-11х=282
141х= 282
х=282:141
х=2
8(х-18)+77=109
8(х-18)=109-77
8(х-18)=32
8х-144=32
8х=32+144
8х=176
х=176:8
х=22
2(х-7)-76=0
2(х-7)=76
2х-14=76
2х=76+14
2х=90
х=45
(4х-13)*7=49
4х-13=49:7
4х-13=7
4х=13+7
4х=20
х=20:4
х=5
390:(4х+3)=26
4х+3=390:26
4х+3=15
4х=15-3
4х=12
х=12:4
х=3
528:(5х-7)=16
5х-7=528:16
5х-7=33
5х=33+7
5х=40
х=40:5
х=8
594:(8х-55)=18
8х-55= 594: 18
8х-55=33
8х=55+33
8х=88
х=88:8
х=11
735:(6х+17)=21
6х+17=735:21
6х+17=35
6х=35-17
6х=18
х=18:6
х=3
6*13х+543=621
78х+543=621
78х=621-543
78х=78
х=78:78
х=1
(12х-4)*2=88
12х-4=88:2
12х-4=44
12х=44+4
12х=48
х=48:12
х=4