Question

解一元一次方程~2.5[1-3x+二分之一（4+3x）]=2-x

Answer 1

2.5[1-3X+1/2(4+3X)]=2-X

2.5[1-3X+4/2+3X/2]=2-X

2.5-7,5X+5+3.75X=2-X 移项：

7.5X-3.75X-X=5+2.5-2

2.75X=5.5

X=2