{4(x-2)/5}-7(x-4)/6=(x-5)/4-15
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{4(x-2)/5} - 7(x-4)/6 = (x-5)/4 - 15
⇒{(4x-8)/5} - (7x-28)/6 = (x-5)/4 - 15
⇒4x/5 - 8/5 - 7x/6 + 28/6 = x/4 - 5/4 - 15
⇒4x/5 - 7x/6 - x/4 = -5/4 - 15 + 8/5 - 28/6
⇒48x/60 - 70x/60 - 15x/60 = -75/60 - 900/60 + 96/60 - 280/60
⇒(48x - 70x - 15x)/60 = (-75 - 900 + 96 - 280)/60
⇒-37x/60 = -1159/60
⇒-37x = -1159
⇒ x = -1159/(-37)
⇒x = 1159/37
⇒{(4x-8)/5} - (7x-28)/6 = (x-5)/4 - 15
⇒4x/5 - 8/5 - 7x/6 + 28/6 = x/4 - 5/4 - 15
⇒4x/5 - 7x/6 - x/4 = -5/4 - 15 + 8/5 - 28/6
⇒48x/60 - 70x/60 - 15x/60 = -75/60 - 900/60 + 96/60 - 280/60
⇒(48x - 70x - 15x)/60 = (-75 - 900 + 96 - 280)/60
⇒-37x/60 = -1159/60
⇒-37x = -1159
⇒ x = -1159/(-37)
⇒x = 1159/37
safia:
thank you so much
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