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skater
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2023-05-20 17:01:48
y-2x+3xy=24
3xy+y-2x=24
y(3x+1)-2x=24
y(3x+1)-2x-24=0
y(3x+1)-2x-2/3-70/3=0
y(3x+1)-2(x+1/3)-70/3=0
3y(x+1/3)-2(x+1/3)-70/3=0
(x+1/3)(3y-2)=70/3
3(x+1/3)(3y-2)=70
(3x+1)(3y-2)=70
Tự làm nhé^^
2022-11-26 22:03:26
(2-4)+(6-8)+....+(86-88)
có 44 cặp
=> -2x44=-88
2022-11-24 22:41:13
x:3=10-4,5
x:3=5,5
x=16,5
2022-11-22 22:15:06
7281,9
2022-11-20 22:41:59
2a=3b
=>a/3=b/2=a/3x1/5=b/2x1/5=a/15=b/10
=>a/15=b/10=c/5
theo t/c
a/15=b/10=c/5=a+b-2c/15+10-10=-30/15=-2
a=-30
b=-20
c=-10
2022-11-18 22:05:06
2x+1=±(12x-5)
TH1: 2x+1=12x-5
x=3/5
TH2: 2x+1=-12x+5
x=2/7
Vậy...
