求解X-0.5X-0.5=2-3⼀(X+2)

3(x+2)-2(x-2)=-2x+6
2025-06-26 12:42:34
推荐回答(2个)
回答1:

①X-0.5X-0.5=2-3/(X+2)
0.5x=2.5-3/(x+2) 0.5x(x+2)=2.5(x+2)-3
0.5x²+x=2.5x+5-3 0.5x²-1.5x-2=0
x²-3x-4=0 (x-4)(x+1)=0 x1=4 x2=-1
②3(x+2)-2(x-2)=-2x+6
3x+6-2x+4=-2x+6 3x=-4 x=-4/3

回答2:

3x+6-2x-4=-2x+6
x+2=-2x+6
3x=4
x=4/3