I have a vector of strings that contain mathematical expressions. E.g.,
x <- c("5 <= 7", "z = 1+2")
and I would like to decompose each expression into its left- and
right-hand-side components etc., output something like

"5" "<=" "7"
"z" "=" "1" "+" "2"

Is there something built into the R language to accomplish this?
Thanks for advance.
Dan

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