求方程解:x与0.7的乘积比X少2.7
问题描述:
求方程解:x与0.7的乘积比X少2.7
答
0.7x + 2.7 = x
0.7x - x = -2.7
-0.3x = -2.7
x = (-2.7) ÷(-0.3)
x = 9