8x-20+40=90

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Solution for 8x-20+40=90 equation: 



8x-20+40=90

We move all terms to the left:

8x-20+40-(90)=0

We add all the numbers together, and all the variables

8x-70=0

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

8x=70

x=70/8

x=8+3/4

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