1/4x+5+1/2【x-(1/4x+5)】-5+40=x
1个回答
1/4x+5+1/2【x-(1/4x+5)】-5+40=x
整理:
1/4x+1/2x-1/8x-5/2+40=x
去分母
2x+4x-x-20+320=8x
3x=300
x=100
相关问题
40x=35*(x=4) 7:5=(1/2x):(1/2-42) 3:5=x:(20-x) 1.5x=1.25*(x+1
1/2X1/3-1/3X1/4-1/4X1/5-1/5X1/6.1/39X1/40
1/2X1/3-1/3X1/4-1/4X1/5-1/5X1/6.-1/39X1/40
(x-1):12=4.5:5.4 2.5:x=0.2:40% x-9分之4X=250
4(x-2)-[5(1-2x)-4(5x-1)]
1/4x5+1/5x6+1/6x7+.+1/39x40
X:40=2.5:4 1
2.5:1/4=40/X
解方程 9x-1.8=5.4 7÷X=0.5 1-20%x=0.4 40%x=4.2 4x-1.6x=36 5x÷4=3