中一英數(Linear Equations in One Unknown)

2[3x(x-2)]=3[2x(x-1)]+12
唔好理(+12)住..做晒乘數先加數

首先左邊: 將3x乘入(x-2)得出3x^2-6x
右邊都係: 將2x乘入(x-1)會得出2x^2-2x

之後左邊再將2乘入3x^2-6x得出6x^2-12X
右邊都係咁..將3乘入2x^2-2x得出6x^2-6x+12

6x^2-12X=6x^2-6x+12
將有x既數擺埋1邊方便睇..
記得如果要將右邊既數調去左邊+會變-, -會變+

變成: 6x^2-6x^2-12x+6x=12
-12x+6x=12
-6x=12
x=12/-6
x=2

我諗你寫返落張紙度會易睇D..易明D!!
希望幫到你拉:)