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Answer:
9s-3s10s or 3-10s
Step-by-step explanation:
10s+s-3s10s+s-3s
first of all, we collect like terms
10s+s+s-3s-3s10s
=9s-3s10s
it could also be equal to
9s/3s-(3s10s/3s)
3-10s
when we divide through by 3s