Question

18(x+14)=378
16(4x-26)=224
9(152-7x)=927

Answer 1

1. 18х+252=378
      18х=378-252
       18х=126 х=7
2.
64х-416=224
64х=224+416
64х=640
Х=10

3.
1368-63х=927
-63х=927-1368
-63х=-441
Х=7

Answer 2

1) 
18(Х+14)=378
Х+14=378 : 18
Х+14=21
Х=21-14
Х=7

2)16(4х-26)=224
4х-26=224/16
4х-26= 14 
4х=14+26
4х=40  
х=10

3)9(152-7х)=927    
152-7х=927/9
152-7х=103
7х=152-103
7х=49
х=7