The sum of the ages of Doris and Fred is y years. If Doris is 12 years older than Fred, how many years old will Fred be y years from now, in terms of y?
y-6
2y-6
~$\frac{y}{2}$~-6
~$\frac{3y}{2}$~-6
~$\frac{5y}{2}$~-6
登录 或 注册 后可以参加讨论
d+f=y d-f=12 f+y=?
how many years old will Fred be y years from now 翻译过来是“y年后， F多大” 设D和F分为为他两的年龄 D + F = y D - F = 12 F = y/2 - 6 题目y 年之后F的年龄多大 F + y =3y/2 - 6
how many years old will Fred be y years from now？ 还原成Fred will be how many years old y years from now?
设D和F分为为他两的年龄 D + F = y D - F = 12 F = y/2 - 6 题目y 年之后F的年龄多大 F + y =3y/2 - 6
扫描二维码，直接登录
d+f=y
d-f=12
f+y=?
how many years old will Fred be y years from now
翻译过来是“y年后， F多大”
设D和F分为为他两的年龄
D + F = y
D - F = 12
F = y/2 - 6
题目y 年之后F的年龄多大
F + y =3y/2 - 6
how many years old will Fred be y years from now？
还原成Fred will be how many years old y years from now?
设D和F分为为他两的年龄
D + F = y
D - F = 12
F = y/2 - 6
题目y 年之后F的年龄多大
F + y =3y/2 - 6