а) 69·k=14076
k=14076/69
k=204
b·74=22348
b=22348/74
b=302
б) (7001+ x)·42=441000
раскроем скобки
294042+42x = 441000
42x-146958 = 0
42x = 146958
x = 3499
(8001+y)·32=656000
256032+32y = 656000
32y-399968 = 0
32y = 399968
y = 12499
в) (с-111)·59=11918
59c-6549 = 11918
59c-18467 = 0
59c = 18467
c = 313
975·(а-459)=12675
975a – 447525 = 12675
975a = 12675 + 447525
975a = 460200
a = 472
а) 69·k=14076
k=14076/69
k=204
b·74=22348
b=22348/74
b=302
б) (7001+ x)·42=441000
раскроем скобки
294042+42x = 441000
42x-146958 = 0
42x = 146958
x = 3499
(8001+y)·32=656000
раскроем скобки
256032+32y = 656000
32y-399968 = 0
32y = 399968
y = 12499
в) (с-111)·59=11918
раскроем скобки
59c-6549 = 11918
59c-18467 = 0
59c = 18467
c = 313
975·(а-459)=12675
975a – 447525 = 12675
975a = 12675 + 447525
975a = 460200
a = 472