Pre-Calculus

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t(s(x))

= t((1/2)x + 3)

replace x by (1/2)x + 3 in definition of t(x)

= 2((1/2)x + 3) - 6

open parenthesis

= x + 6 - 6

= x

I hope it will help you.

Thanks

yes, 1x and x are the same..

If you get 1x then just write it x..

I hope it will help.

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