X*4-10x*2=-9

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Solution for X*4-10x*2=-9 equation: 



X*4-10X*2=-9

We move all terms to the left:

X*4-10X*2-(-9)=0

We add all the numbers together, and all the variables

X*4-10X*2+9=0

Wy multiply elements

4X-20X+9=0

We add all the numbers together, and all the variables

-16X+9=0

We move all terms containing X to the left, all other terms to the right

-16X=-9

X=-9/-16

X=9/16

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