Aidez moi s'il vous plaît !

a) x/5 = 2/3 => x=(2/3)/5

b) (3x+5)(2x+13)=0=> soit (3x+5) =0 => x =-5/3 soit (2x+13) = 0 => x=-13/2

c) (3x+2)(x-2)=0 => soit (3x+2)=0 =>x = -2/3 soit (x-2) = 0 =>x =-2

d) 4x² =100 => x²=25 =>x =5

e) (2x-5)(1+2x)=0 => soit (2x - 5) = 0 =>2x = 5 => x=5/2 soit (1+2x) =0 =>1=-2x =>x =-1/2

f) (4x+1)(-x+3)=0 => soit (4x+1) = 0 => 4x =-1 => x =-1/4 soit (-x+3)=0 => x=3

g)x (2x-7)=0 => soit x=0 soit x=7/2