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x+3/5=7/8解方程

解:原方程即: x-3/4+1/2=7/8 x-3/4+2/4=7/8 x-1/4=7/8 x=7/8+2/8 x=9/8 x=1又1/8

8.5x-5×=3.7 3.5x=3.7 x=3.7÷3.5 x=37/35

1/3+x=5/9 x=5/9-3/9 x=2/9 x-7/8=1/5 x=8/40+35/40 x=43/40 x+3/10=9/20 x=9/20-6/20 x=3/20 x+1/4=5/12 x=5/12-3/12 x=2/12 x=1/6 请采纳正确答案,你们只提问,不采纳正确答案,回答都没有劲!谢谢管理员推荐采纳!! 朋友,请【采纳答案】,...

(1)X+ 3 5 = 7 8 , X+ 3 5 - 3 5 = 7 8 - 3 5 , X= 11 40 ;(2)8X-0.75×5=0.25, 8X-3.75=0.25, 8X-3.75+3.75=0.25+3.75, 8X÷8=4÷8, X=0.5;(3)2.7X-1.6=38.9,2.7X-1.6+1.6=38.9+1.6, 2.7X÷2.7=40.5÷2.7, X=15;(4)X÷4.5=20,X...

(1)x+ 3 7 = 3 4 , x+ 3 7 - 3 7 = 3 4 - 3 7 , x= 9 28 ;(2)x- 5 12 = 3 8 ,x- 5 12 + 5 12 = 3 8 + 5 12 , x= 19 24 .

x-5/12=1/3 12x-5=4 12x=9 x=3/4 5/13+x=1/2 x=1/2-5/13 x=13/26-10/26 x=3/26 7/8-x=3/4 x=7/8-3/4 x=7/8-6/8 x=1/8

若方程是(x+1)/x=5/8 去分母得8(x+1)=5x 3x=-8 x=-8/3 若方程是(x+1)/x=1/2 去分母得2(x+1)=x 2x+2=x x=-2

x-9分之7+2/3=5分之八 解:x-9分之7+2/3=5分之八 x-7/9+2/3=8/5 x=8/5+7/9-2/3 x=67/45

8x=28*5 x=140/8=35/2 5x/8=5_3 x=2*8/5=16/5 x/6=15/7_8/7=1 x=6

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