Solve: 231=7(x+8)x
231=7(x+8)x
the 231 seems large, so we look for a way to simplify - and it turns out to be a multiple of 7:
using cancellation and rearranging terms we get the following:
Notice that 11+(-3)=8 and (11)(-3)=-33 so we'll use them in our grouping:
which has solutions
x=3 and x=-11
:)
the 231 seems large, so we look for a way to simplify - and it turns out to be a multiple of 7:
using cancellation and rearranging terms we get the following:
Notice that 11+(-3)=8 and (11)(-3)=-33 so we'll use them in our grouping:
which has solutions
x=3 and x=-11
:)
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