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OpenStudy (ttp):
How many different variables are in the expression 1+6r -2 (r -1)? Name each variable.
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OpenStudy (ttp):
Are the variables r? So therre are 2 variables ?
OpenStudy (***[isuru]***):
variable = unknown term that u can use to substitute values.. here r is the variable and it is the only variable 'cause the expression will simplify into... 1+6r -2 (r -1) 1 + 6r -2r + 2 4r + 3 got it ? :-)
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