如何解方程X-30%X=4.9
问题描述:
如何解方程X-30%X=4.9
答
X-30%X=4.9
0.7X=4.9
X=4.9/0.7
X=7
如何解方程X-30%X=4.9
X-30%X=4.9
0.7X=4.9
X=4.9/0.7
X=7