*/ Tìm x ∈ Z , biết :
a, (-12) . x = -15 . (-4) - 12
b, (-5) . x + 5 = -3 . (-8) + 6
c, 3 . x + 36 = -7x - 64
d, -5x - 178 = 14x + 145
*/ Tìm x :
a, -5 . ( x - 2 ) = 0
b, ( 5 - x ) . ( x + 7 ) = 0
c, (-4) . x = 20
d, (-1005) . ( x + 2 ) = 0
e, ( 8 + x ) . ( 6 - x ) = 0
f , 8x . ( 5 - x ) = 0
g, x2 - 5x = 0