Question

10 x+9(8-x)=78 这种方程怎么解

Answer 1

10x+9（8-x）=78
10x+72-9x=78
x+72=78
x=78-72
=6
望采纳哦谢谢！

Answer 2

先把括号打开，10x+72-9x=78,
72+x=78两边减72
x=6

Answer 3

10x+72-9x=78 (10-9)x+72=78 x+72=78 x=78-72 x=6 记得点采纳啊

Answer 4

解10x-9x==78-72 x=6

Answer 5

解10X+9×8-9x＝78
10X-9X＝78-72
X＝6