Question

解方程：7(4-x)=9(x-4)怎么解？

Answer 1

7(4-x)=9(x-4)
28-7x=9x-36
16x=64
x=4

希望能帮到你！

Answer 2

展开方程28-7x=9x-36移项合并得-16x=-64解得x=4

Answer 3

7(4-x)=9(x-4);
-7(x-4)=9(x-4);
16(x-4)=0;
x-4=0,x=4

Answer 4

解：28-7X=9X-36
9X+7X=28+36
16X=64
X=4

Answer 5

7(4-x)=9(x-4)
28-7x=9x-36
16x=28+36
x=4