1) 7938-14×а=35280÷360 4) 4860-К×62=2442
7938-14×а=98 К=(4860-2442)÷62
а=(7938-98)÷14 К=39
а=560 4860-39×62=2442
7938-14×560=35280÷360
2) Х×32-123=3013 5) 91260-320×b=74620
Х=(3013+123)÷32 b=(91260-74620)÷320
Х=98 b=52
98×32-123=3013 91260-320×52=74620
3) С×210-900=12750
С=(12750+900)÷210
С=65
65×210-900=12750