Bonjour,
Simplifier:
a. -(2x + 1)= - 2x-1
b. 3- (5-x)= 3 -5+x= x-2
c. 2 - (2x - 1)= 2-2x+1= -2x+3
d. -(-3x - 1) – (5x - 2)= 3x+1-5x+2= - 2x+3
e. -(2x - 5x+1-4+7x)= - (4x-3)= - 4x +3
f. -[2-(1-x) + 1]-(3-2x)= - (2-1+x) +1)-3+2x= -(x+1+1)-3+2x= -x-2-3+2x= x-5
