(x-7)x7 =(x-11)x11 怎么解方程?
问题描述:
(x-7)x7 =(x-11)x11 怎么解方程?
答
7x-49=11x-121
4x=121-49
4x=72
x=18
答
7x-49=11x-121
4x=72
x=18
答
(x-7)x7 =(x-11)x11
7x-49=11x-121
11x-7x=121-49
4x=72
x=18
答
(x-7)x7 =(x-11)x11
则7x-49=11x-121
则11x-7x=121-49
则4x=72
则x=18