x+7*4=20

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Solution for x+7*4=20 equation: 



x+7*4=20

We move all terms to the left:

x+7*4-(20)=0

determiningTheFunctionDomain
x-20+7*4=0

We add all the numbers together, and all the variables

x+8=0

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

x=-8

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