Describe the bug
The equation expression is not showing correct sign when using -

To Reproduce

import cvxpy

a, b = cvxpy.Variable(1, name="a"), cvxpy.Variable(1, name="b")
c = a - b
print(c)
print(-c)

Expected behavior
Displaying

a + -b
-a + b

or

a + -b
-(a + -b)

Output
The current output of the expression -c is misleading

a + -b
-a + -b

Version

• OS: windows
• CVXPY Version:1.6.4