7x-9x=20-5

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Solution for 7x-9x=20-5 equation: 



7x-9x=20-5

We move all terms to the left:

7x-9x-(20-5)=0

We add all the numbers together, and all the variables

7x-9x-15=0

We add all the numbers together, and all the variables

-2x-15=0

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

-2x=15

x=15/-2

x=-7+1/2

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