1.)7x+13=902.)12x-18=303.)10x+40=100

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Solution for 1.)7x+13=902.)12x-18=303.)10x+40=100 equation: 



1.)7x+13=902.)12x-18=303.)10x+40=100

We move all terms to the left:

1.)7x+13-(902.)12x-18)=0

We add all the numbers together, and all the variables

1.)7x+13-90212x-18)=0

x=0/1

x=0

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