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解方程 x/4=1/3:30% 2/5×(x+1/3)=4 3/4-

解方程x/4=1/3:30%x=4/3:4*30%x=100/92/5*(x+1/3)=42x+2/3=206x+2=60x=29/33/4-1/4x=1/3

3x+x=3+1-1/24x=7/2x=7/8请采纳谢谢~!

x/4=30%解:x=1.2 36/x=3/4解:3/4x=36 x=48 10/x=2.5/0.8 解:25/8x=10 x=3.5 x/4=1.2/5解: x=1.2/5*4 x=0.96 X/1.2=1.5/0.6解: x=1.5/0.6*1.2 x=2 x/0.4=1.5/6解: x=1.5/6*0.4 x=1/15 x/7=0.6/3.5解:x=0.6/3.5*7 x=6/5 x/10=0.1/2解:x=0.1/2*10

(1) 1 3 (x+ 3 5 )= 2 3 1 3 (x+ 3 5 )*3= 2 3 *3 x+ 3 5 =2 x+ 3 5 - 3 5 =2- 3 5 x= 7 5 ;(2)60%x+ 1 5 = 3 4 3 5 x+ 1 5 = 3 4 3 5 x+ 1 5 - 1 5 = 3 4 - 1 5 3 5 x= 11 20 3 5 x* 5 3 = 11 20 * 5 3 x= 11 12 .

①x+30%x=52(1+30%)x=52 1.3x=521.3x÷1.3=52÷1.3x=40;② 2 3 x+ 3 4 x= 1 6 ( 2 3 + 3 4 )x= 1 6 17 12 x= 1 6 17 12 x* 12 17 = 1 6 * 12 17 x= 2 17 ;③(75%+1)x=63% 1.75x=0.631.75x÷1.75=0.63÷1.75 x=0.36;④ 5 6 x- 1 4 =0.75.

4(x+1)=3(x+1+1)4(x+1)=3(x+1)+34(x+1)-3(x+1)=3 x+1=3 x=2

(1)1 1 5 ÷x=3, 1 1 5 ÷x*x=3*x, 3x=1 1 5 , 3x÷3=1 1 5 ÷3, x= 2 5 ;(2) 4 5 x+ 2 3 x=2 1 5 , 22 15 x=2 1 5 , 22 15 x÷ 22 15 =2 1 5 ÷ 22 15 , x= 3 2 ;(3)x+10%x=110, 1.1x=110, 1.1x÷1.1=110÷1.1, x=100.

(1) 4-x/x-3=2-1/3-x两边同乘x-34-x=2(x-3)+14-x=2x-6+1x=3分式方程要检验经检验,x=3时分母x-3=0是增根,舍去方程无解(2) 4/(x2-4)+(x+3)/x-2=x-1/x+2 两边乘(x+2)(x-2)4+(x+2)(x+3)=(x-1)(x-2)4+x+5x+6=x-3x+28x=-8x=-1经

x+4/1=10/3x=3.3-4x=-0.7x-3/2=5/4 x=5/4+3/2x=5/4+6/4x=11/44/1+x=8/7x=8/7-4x=8/7-28/7x=-20/7

(1)4=3(+1) 4=3+3 4-3x=3+3-3x, x=3;(2)1 3 5 :(-0.45)=5 1 3 , 5 1 3 *(x-0.45)=1 3 5 , 5 1 3 *(x-0.45) ÷5 1 3 =1 3 5 ÷5 1 3 , x-0.45+0.45=0.3+0.45, x=0.75.

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