3×(2.7x-0.6)=8.5-(0.9ⅹ+2.5)解方程怎么解?

2025-06-22 21:48:26
推荐回答(3个)
回答1:

3×(2.7x -0.6)=8.5-(0.9x +2.5)
8.1x-1.8=8.5-0.9x-2.5
8.1x+0.9x =1.8+8.5-2.5
9x=7.8
x =7.8/9
x=13/15

回答2:

3×(2.7X-0.6)=8.5-(0.9X+2.5)
8.1X-1.8=6-0.9X
8.1X+0.9X=6+1.8
9X=7.8
X=7.8/9
X=13/15.

回答3:

8.1x-1.8=8.5-0.9x-2.5
9x=7.8
x=78/90=13/15