Respuesta :

xsychic

hi <3

call your unknown variable 'x' and form an equation

9 - x = 7

subtract 9 from both sides

-x = -2

divide both sides by -1 to get your answer of:

x = 2

hope this helps :)

minuteacrimony

9-x=7

9-2=7

x=2

I hope this helps

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