а) 16х +14 = 558
16х = 558 -14
16 х = 544
х = 34
б) 988 = 26(7х-18)
988 = 182 х -468
-182х = -988 - 468
182х = 1456
х = 8
33x-17x+14=558
16x=544
x=34
988(7x-18)=26
7x-18=988/26
7x-18=38
7x=56
x=8
