0.7(x+0.5)=0.
解方程;2(X-0.7)=4.8 1/8(X+0.5)=75% 9*8-4X=60 5X-20%X=19.2 3X-0.
4x-1.5 5x-0.8 1.2-x --- - --- = ---- 0.5 0.2 0.
计算0.5x-0.7=6.5-1.3x 2(x-2)-3(4x-1)=9(1-x)
方程 x-0.7x+15=0.5x
0.7x+12.3x=2.8+0.5x
解一元一次方程:0.5x-0.7x=6.5-1.3x
0.5x-0.7=-1.3x+6.5
0.5x-0.7=6.5-1.3x
1.4X-0.7X=56
150.5x -4x +0.5x =7
x—0.8x=0.
x-0.5x=3怎么解?