How do you simplify $18 m - 7 + 12 m$ $18m-7+12m$ ?

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Answer 1 · 2016-01-08T19:13:25

by collecting like terms.

like terms are terms which have the same variable in them then you collect them by adding / subtracting their coefficients.

18m and 12m are like terms , - 7 is on it's own

18m + 12m = 30m

hence 18m - 7 + 12m = 30m -7

How do you simplify 18m−7+12m18m-7+12m?