ohe09nz81r的部落格

標題:

方程問題(過程+答案)

發問:

(過程+答案) 1) y-(1/3y+3)+2/5=21 2) 1/3y+(1/3y x 2/5)=42 3) 1/3y+(1+1/3) x 1/3y =70 4) y-1/3y-[(1-1/3y) x 1/3+3}=37 更新: 1)-4) Ans.=90!!!!!!!!

最佳解答:

• 初中英數問題~~~~~~~~~
• 中六合彩頭獎的或然率？@1@
• Maths question---@1@

• 初中英數問題~~~~~~~~~
• 中六合彩頭獎的或然率？@1@
• Maths question---@1@

此文章來自奇摩知識+如有不便請留言告知

1) y-(1/3y+3)+2/5=21 y-1/3y-3+2/5=21 15(y-1/3y-3+2/5)=21x15 15y-5y-45+6=315 10y-39=315 10y=354 y=35.4 2) 1/3y+(1/3y x 2/5)=42 1/3y+2y/15=42 15(1/3y+2y/15)=42x15 5y+2y=630 7y=630 y=630/7 y=90 3) 1/3y+(1+1/3) x 1/3y =70 1/3y+(4/3)x(1/3y)=70 1/3y+4y/9=70 9(1/3y+4y/9)=70x9 3y+4y=630 7y=630 y=90 4) y-1/3y-[(1-1/3y) x 1/3+3}=37 y-1/3y-[1/3-y/9+3]=37 y-1/3y-1/3+y/9-3=37 9(y-1/3y-1/3+y/9-3)=37x9 9y-3y-3+y-27=333 7y-30=333 7y=363 y=363/7 Next time can you please write the question clearly so that we can solve the question accurately????

其他解答:

玩野牙題主! 90 - (1/3( 90) + 3) +2/5 = 21?? 90 - 33 + 2/5 = 21?? 57 +2/5 = 21??? 自作孽, 不可活