Question

equações do 1 grau

A) 3 (x-4)/2 = 3(x+1)+10/4

B) 3/2x+3/5=x/2+3

C) 5/4x+10=7/2x+3

me ajudem por favor!!!!!!

Answer 1

A) 3 (x-4) = 3(x+1)+10
           2                    4
6 (x-4) = 12(x+1)+10=>6x - 24) = 12x + 12 + 10

=>12x-6x= -24-22 => 6x = 36 ==. x = 6
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B) 3x+3=x+3 => 15x+6=5x+30=> 15x-5x=30-6=>10x=24=> x = 24/10
    2    5   2
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C) 5x+10=7x+3=> 5x+40=14x+12=>14x-5x=40-12=>9x=28==> x=28/9
     4         2