Tìm x biết: a) |x + 1| + |x + 2| + |x + 3| = 4x; b) |x + 1| + |x + 2| + |x + 3| + |x + 4| = 5x - 1
Tìm x biết:
a) |x + 1| + |x + 2| + |x + 3| = 4x
b) |x + 1| + |x + 2| + |x + 3| + |x + 4| = 5x - 1
c) |x + 2| + |x + 3/5| + |x + 1/2| = 4x
d) |x + 1,1| + |x + 1,2| + |x + 1,3| + |x + 1,4| = 5x