3x+x+4x+9=75

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Solution for 3x+x+4x+9=75 equation: 



3x+x+4x+9=75

We move all terms to the left:

3x+x+4x+9-(75)=0

We add all the numbers together, and all the variables

8x-66=0

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

8x=66

x=66/8

x=8+1/4

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