等式两边同乘8,化为6X-40X=1
3/4X - 5 =1/8解:3/4X-5×8=1/8×8 3/4X -40=1 4/3X =41 X=41÷3/4 X=41÷0.75 x≈54.667
两边同时乘以8,得6X-40X=1-34X=1X=-1/34