x*7-15=20

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Solution for x*7-15=20 equation: 



x*7-15=20

We move all terms to the left:

x*7-15-(20)=0

We add all the numbers together, and all the variables

x*7-35=0

Wy multiply elements

7x-35=0

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

7x=35

x=35/7

x=5

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