Question

resolva as equações abaixo:

a) 2 x+5=27
b) 4x-8=2x+6
c) 7x+1=6x+6
d) 5x-3=2x-9

Answer 1

a) 2x+5=27    b) 4x-8=2x+6      c)7x+1=6x+6        d)5x-3=2x-9

    2x=27-5        4x-2x=6+8           7x-6x=6-1            5x-2x=-9+3

    2x= 22           2x=14                  x=5                       3x=-6

   x=22/2           x=14/2                                                x=-6/3

    x=11              x=7                                                     x=-2