Question

Resolva as equações do 1 grau em U=Q
a)16-x=4x+25
b) 2x+7-x=3-4x
c)25x+1=25+x
d) 11-x+5=4x+22-6x

Answer 1

a) 16 - x = 4x + 25
     16 - 25= 4x + x
      - 9 = 5x 
        x= -9/5
b) 2x + 7 - x= 3 - 4x
x + 7= 3 - 4x
x + 4x = 3 - 7
5x = - 4
x= -4/5

c)25x + 1 = 25 + x
   25x - x = 25 - 1
   24x= 24
     x= 1
d) 11 - x + 5 = 4x + 22 - 6x
     16 - x = 22 - 2x
      - x + 2x = 22 - 16
            x=  6