Tìm x, biết: a) x + 527 = 1892 b) x − 631 = 361

a) x + 527 = 1892

x = 1892 - 527

x = 1365

b) x – 631 = 361

x = 361 + 631

x = 992

c) x × 5 = 1085

x = 1085 : 5

x = 217

d) x : 5 = 187

x = 187 × 5

x = 935