x(7x2+4)

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I couldn't find info on rules for answering so this is what i think it is hopefully someone will add saying yes or no or report it for removal if I'm wrong,I'm only trying to help.use PEMDAS  7x2=14+4=18 so you now have x(18) additive inverse is -x(18) multiplicative inverse -1/x(18)id double check this with someone before taking it for hard fact