Question

Rezolvati in Q ecuatiile:
a) 2x= -7
b) -8=0
c) 3 supra 4 - 9 supra 2x= 0
d) 4x-0.4=0

Answer 1

a) 2x=-7
    x=-7/2
    x=-3,5
c)rezulta ca 9supra 2x =0 si rezulta ca x=0
d) 4x-0.4=0
    4x=0.4
     x=0.4/4
   x=0.1
b) nu are sens