20a+4a-16a-7a=17

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Solution for 20a+4a-16a-7a=17 equation: 



20a+4a-16a-7a=17

We move all terms to the left:

20a+4a-16a-7a-(17)=0

We add all the numbers together, and all the variables

a-17=0

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

a=17

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