Question

simplifica as expressões:

e)5+(2x+4)-5

f) -5(x-2)+(1-3x)

Answer 1

e) 5+(2x+4)-5
   10x+20-5
   10x=-20+5
   10x=-15
     x=-15/10


f)-5(x-2)+(1-3x)
  -5x+10+1-3x
   -5x-3x=-10-1
     -8x=-11 (-1)
   8x=11
x=11/8