Tìm x, biết 4(18−5x) −12(3x−7) = 15(2x−16) −(6x+14)
Giải thích
418−5x−123x−7=152x−16−6x+1472−20x−36x+84=30x−240−6x−84156−56x=24x−324156+324=24x+56x80x=480x=6
418−5x−123x−7=152x−16−6x+1472−20x−36x+84=30x−240−6x−84156−56x=24x−324156+324=24x+56x80x=480x=6