X*4+x*2=18

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Solution for X*4+x*2=18 equation: 



X*4+X*2=18

We move all terms to the left:

X*4+X*2-(18)=0

Wy multiply elements

4X+2X-18=0

We add all the numbers together, and all the variables

6X-18=0

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

6X=18

X=18/6

X=3

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