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Other Ways to Solve
1.1 10 = 2•5
(10)7 = (2•5)7 = 27 • 57
((27•57) + 9) + 1
3.1 Pull out like factors : 27 • 57 + 10 = 10 • (1 + 1)
10 • (1 + 1)
How did we do?