(4+X)乘3=4X+4
问题描述:
(4+X)乘3=4X+4
答
(4+X)乘3=4X+4
12+3x=4x+4
4x-3x=12-4
x=8
(4+X)乘3=4X+4
(4+X)乘3=4X+4
12+3x=4x+4
4x-3x=12-4
x=8