1) (х - 111) * 59 = 11918
х - 111 = 11918 : 59
х - 111 = 202
х = 202 + 111
х = 313
проверка:
(313 - 111) * 59 = 202 * 59 = 11918
2) 975 * (у - 615) = 12675
y - 615 = 12675 : 975
y - 615 = 13
y = 13 + 615
y = 628
975 * (628 - 615) = 975 * 13 = 12675
3) (30901 - а) : 650 = 51
30901 - а = 51 * 650
30901 - a = 33150
а = 30901 - 33150
a = -2249
(30901 - (-2249)) : 650 = (30901 + 2249) : 650 = 33150 : 650 = 51
1) (х - 111) * 59 = 11918
х - 111 = 11918 : 59
х - 111 = 202
х = 202 + 111
х = 313
проверка:
(313 - 111) * 59 = 202 * 59 = 11918
2) 975 * (у - 615) = 12675
y - 615 = 12675 : 975
y - 615 = 13
y = 13 + 615
y = 628
проверка:
975 * (628 - 615) = 975 * 13 = 12675
3) (30901 - а) : 650 = 51
30901 - а = 51 * 650
30901 - a = 33150
а = 30901 - 33150
a = -2249
проверка:
(30901 - (-2249)) : 650 = (30901 + 2249) : 650 = 33150 : 650 = 51