If the sum of a number and eight is tripled, the result is two less than twice the number. How do you find the number?

1 Answer
May 31, 2018

x=-26

With a word question you break it down into parts slowly building the equation (s) that model it.

Explanation:

Splitting the question down into its component parts.

If the sum of a number: ->........................" "x+?
and 8: ->................................................." "x+8
is trippled: ->................" "3xx(x+8) -> 3(x+8)
The result is: ->....................................." "3(x+8)=?
2 less than :->......................................" "3(x+8)=?-2
twice the number:->............................." "3(x+8)=2x-2
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Multiply out the brackets

3x+24=2x-2

3x-2x=-2-24

x=-26