7 + 3(n-2)
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put the bracket before the answer and multiply it by the nth term
Multiply out the brackets and collect the like terms which simplifies to 5w-7v
It means calculate the value of the expression (i.e. simplify) by mutiplying. So, as a completely random example, if you have an expression like: x(x + 1) then, in this particular case, you would multiply what is outside of the brackets by each term inside the brackets to get: x2 + x.
there is no such thing as multiply out...is only multiply out brackets... :)
Brackets are basically the same as parentheses. If they are inside of parentheses, then you simplify that term before anything else. If they are outside of parentheses, then you simplify the terms in the parentheses first and then the term within the brackets.