f1數學問題_0－ohe09nz81r的部落格

標題:

f1數學問題

發問:

幫幫手解 8w-5-2w=10 題2 : 0=f+80+6f+4 題3 : 0.3k+0.2k+5= -15 ..............................題3: 15=5(2a-3) 題4: 6-3(4+7b)=36 thx..............

最佳解答:

8w-5-2w=10 6w-5=10 6w=15 w=2又1/2 0=f+80+6f+4 0=7f+84 -84=7f f= -12 0.3k+0.2k+5=-15 0.5k= -20 k= 0.75 15=5(2a-3) 15= 10a-15 a=3 6-3(4+7b)=36 6-12-21b=36 21b= -42 b = -2

此文章來自奇摩知識+如有不便請留言告知

其他解答:

Q1: 8w - 5 - 2w = 10 6w = 15 w = 15/6 w = 5/2 Q2: f + 80 + 6f + 4 = 0 7f + 84 = 0 7f = -84 f = -84/7 f = -12 Q3: 0.3k + 0.2k + 5 = -15 0.5k = -20 k = -20/0.5 k = -40 Q4: 5 (2a - 3) = 15 10a - 15 = 15 10a = 30 a = 3 Q5: 6 - 3 (4 + 7b) = 36 6 - 12 - 21b = 36 21b = 6 - 12 - 36 21b = -42 b = -42/21 b = -2|||||1. 8w-5-2w=10 6w-5=10 6w=10+5 6w=15 w=15/6 w=5/2 w=2/1/2 2. 0=f+80+6f+4 0=7f+84 -84=7f -12=f f=-12 3: 15=5(2a-3) 15/5=2a-3 3=2a-3 6=2a 6/2=a 3=a a=3 4: 6-3(4+7b)=36 6-12-21b=36 -6-21b=36 21b=36+6 21b=42 b=2|||||1. 8w-5-2w=10 6w-5=10 6w=15 w=2.5 2. 0=f+80+6f+4 7f+84=0 7f=-84 f=-12 4. 15=5(2a-3) 2a-3=3 2a=0 a=0 5. 6-3(4+7b)=36 36=6-3(4+7b) 36+3(4+7b)=6 3(4+7b)=-30 4+7b=-10 7b=-14 b=-2|||||1. 8w-5-2w=10 6w-5=10 6w=10+5 6w=15 w=15/6 w=5/2 w=2/1/2 2. 0=f+80+6f+4 0=7f+84 -84=7f -12=f f=-12 3: 15=5(2a-3) 15/5=2a-3 3=2a-3 6=2a 6/2=a 3=a a=3 4: 6-3(4+7b)=36 6-12-21b=36 -6-21b=36 21b=36+6 21b=42 b=2|||||8w-5-2w = 10 6w-5 = 10 6w = 15 w = 6/15 0 = f+80+6f+4 0 = 7f+84 7f = -84 f = -84/7 (-12) 0.3k+0.2k+5= -15 0.5k+5 = -15 0.5k = -20 k = -20/0.5 (-10) 15 = 5(2a-3) 3 = 2a-3 6 = 2a a = 3 6-3(4+7b) = 36 -3(4+7b) = 30 4+7b = -10 7b = -14 b = -2|||||1.) 8w-5-2w=10 8w-2w-5=10 6w-5+5=10+5 6w=15 6w/6=15/6 2.) 0=f+80+6f+4 0=f+6f+80+4 0=7f+84 0-84=7f+84-84 -84/7=7f/7 f = -12 3.) 0.3k+0.2k+5= -15 0.5k+5-5=-15-5 0.5k/0.5=-20/0.5 k = -40 3.) 15=5(2a-3) 15=10a-15 30/10=10a/10 a=3 4.) 6-3(4+7b)=36 6-12+21b=36 -6+21b=36 21b/ 21 =42/21 b = 2 希望可以幫到你^3^ 2007-10-08 17:20:47 補充：我果個有齊全部step!|||||8w-5-2w=10 6w-5=10 6w=15 w=2.5 0=f+80+6f+4 0=7f+84 -84=7f f= -12 0.3k+0.2k+5=-15 0.5k= -20 k= 0.75 15=5(2a-3) 15= 10a-15 a=3 6-3(4+7b)=36 6-12-21b=36 21b= -42 b = -2|||||8w-5-2w=10 8w-2w=10+5 6w=15 w=15/6 0=f+80+6f+4 6f+f+84=0 7f= -84 f= -12 0.3k+0.2k+5= -15 0.5k= -15-5 0.5k= -20 k= -40 15=5(2a-3) 15/5=2a-3 2a-3=3 2a=6 a=3 6-3(4+7b)=36 -3(4+7b)=30 4+7b= -10 7b= -14 b= -2