1.3x+0.5减5=1.1x+2.5

1.3x+0.5减5=1.1x+2.5


1.3x+0.5-5=1.1x+2.5
1.3x-1.1x=2.5-0.5+5
0.2x=7
x=35



5.5x-3x=1.75求X怎麼算？


5.5x-3x=1.75
（5.5-3）x=1.75
2.5x=1.75
x=1.75/2.5
x=0.7



已知：x^2 /（x^4+x^2+1）=1/4，計算（5x^4-3x^2+5）/ 3x^2


x^2 /（x^4+x^2+1）=1/4
x^4+x^2+1=4x^2
x^4+1=3x^2
所以
（5x^4-3x^2+5）/ 3x^2
=[5（x^4+1）-3x^2]/3x^2
=（5*3x^2-3x^2）/3x^2
=12x^2/3x^2
=4



3X+5=2+5X，請問怎麼算啊？


3x+5=2+5x
移項：3x-5x=2-5
得：-2x=-3
x=1.5

Elden Ring Premiere

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