37.5÷(x-0.79)=1.5
x-18.6+9.4=17.5 1.5x=1.8 42÷(x+5)=3 3x-37.5=25.5 13.2x=8.6x+
(60+x×2)÷(50+x)=1.5
0.4(x-0.2)+1.5=0.7x-0.38 (0.6x+420)÷(x+20)=3
13-2x=4,3x+4×0.5,5(x+4)=55,9÷1.5x=8,1.3x+x=13.8,x-0.7x=6.9,2
先化简再求值:(x+2/x²-2x - x-1/x²-4x+4)÷ x-4/x,其中x=3/2
2(x-7.5)=1.5x
x-x/5=2.4 (求未知数x) 12÷5%x=8 4x+x=12.5
0.3+0.3x=0.39 x= 2x-1.5x=7.6x x= 0.36x÷0.3=1.2 x=
2x-56=16 2x+1.5x2=6 4(x+0.8)=7.2 (5x-12)÷3=10 2x+
解方程 13X-6.8X+X=46.8 2.7×2-1.5X=0 0.9÷(x+0.4)=0.45.
(1)6+2(x-3)=X (2)8-2(x-7)=x-(x-4) (3)2x-(1.5x-1)=2(1.5x-1)
x+17=3(x+13),2x-11.2=0.6x,2.5x-2.17=21.9-5.8x,8(x-1.5)=x+0.6