20+30+7x-5=90

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Solution for 20+30+7x-5=90 equation: 



20+30+7x-5=90

We move all terms to the left:

20+30+7x-5-(90)=0

We add all the numbers together, and all the variables

7x-45=0

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

7x=45

x=45/7

x=6+3/7

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