標題:
幾條maths題
發問:
1. 3r/5-1/2-2=6 2. 4-t=4t-6 3. 2w-w/4=42 4. 4-x/2 + x-1/5-2=0 步驟.. thZ哂
此文章來自奇摩知識+如有不便請留言告知
最佳解答:
1. 3r/5-1/2-2=6 3r/5-1/2=6+2 3r/5=8+1/2 3r=5(8 1/2) r=42 1/2/3 r=14 1/6 2. 4-t=4t-6 4+6=4t+t 10=5t 10/5=t t=2 3. 2w-w/4=42 2w-w/4 (4)=42*4 8w-w=168 7w=168 w=168/7 w=24 4. 4-x/2 + x-1/5-2=0 -x/2+x-1/5 =0+2-4 -5x/10+2x-2/10= -2 (-3x-2)/10=-2 (-3x-2)/10*10=-2*10 -3x-2=-20 -3x=-20+2 -x=-18/3 x=6
其他解答:
1. 3r/5-1/2-2=6 3r/5-1/2-2 2=6 2 3r/5-1/2 1/2=8 1/2 3r/5*5=17/2*5 3r=85/2 3r/3=85/2*1/3 r=85/6 2. 4-t=4t-6 4-t 6=4t-6 6 10-t t=4t t 10=5t t=2 3. 2w-w/4=42 w/4=42 w/4*4=42*4 w=168 4. 4-x/2 x-1/5-2=0 4-x/2 x-1/5-2 2=0 2 4-x/2 2x/2-1/5=2 4 x/2-1/5=2 20 5x/10-2/10=2 18 5x/10=2 18 5x/10*10=2*10 18 5x-18=20-18 5x=2 x=2/5 希望幫到你!|||||1. 3r/5-1/2-2=6 3r/5 = 17/2 3r=85/2 r=85/6 2. 4-t=4t-6 5t = 10 t = 2 3. 2w-w/4=42 7w/4=42 w=24 4. 4-x/2 + x-1/5-2=0 x/2 = -9/5 x = -18/5
留言列表
