Question

Resolva as equações do 1 grau

Answer 1

Resposta:

Explicação passo-a-passo:

a)x+1/1/10-2.(x-3)/1/6=x-1/3/1/15

  x+1/10-2x+6/6=3x-1/3/15

  x+1/10-2x+6/6=3x-1/45

  6x+6/60-10x+60/60=3x-1/45

  -4x+66/60=3x-1/45

  60.(3x-1)=45.(-4x+66)

  180x-60=-180x+2970

  180x+180x=2970+60

  360x=3030

  x=3030/360:30/30

  x=101/12

b)2y/3+5.(2y-3)=3.(4y-1)2+11

  2y/3+10y-15=12y-3/2+11

  4y/6+60y/6-90/6=36y/6-9/6+66/6

  4y+60y-90=36y-9+66

  64y-90=36y+57

  64y-36y=57+90

  28y=147

  y=147/28

c)5x-40=2-x

  5x+x=2+40

  6x=42

  x=42/6

  x=7