(1-2x)÷0.2-5÷0.3=1求X值
问题描述:
(1-2x)÷0.2-5÷0.3=1求X值
答
(1-2x)÷0.2-5÷0.3=1
5(1-2x) - 50/3 = 1
15(1-2x) -50 =3
15 - 30x -50 = 3
30x = -38
x = -19/15