Пoжалуста. 1. 7938-14*a=35280: 360 2. x*32-123=3013 3. c*210-900=12750 4. 4860-k*62=2442 5. 91260-320*b=74620

1.
7938-14×а=98
-14×а=98+7938
-14×а=8036
а=–(8036÷14)
а=574

2.
х×32-123=3013
х×32=3013+123
х×32=3136
х=3136÷32
х=98

3.
с×210-900=12750
с×210=12750+900
с×210=13650
с=13650÷210
с= 65

5.
91260-320×b=74620
-320×b=74620-91260
-320×b=-16640
b= 16640÷320
b=52

4.
4860-к×62=2442
-к×62=2442-4860
-к×62=-2418
к=2418÷62
к=-39