What are the constants in this expression? negative 10 point 6 plus 9 tenths plus 2 fifths m minus 2 point 4 n plus 3 m

Constants are terms with no variables attached. In this expression, negative 10.6 and 9 tenths (0.9) have no variables; the other terms contain m or n. So the constants are negative 10.6 and 9 tenths, choice A.

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