Answer:
Step-by-step explanation:
7x-5
x-5(5x-1) becomes 6x-5+1x-5. Once you simplify that, you get 7x-5.
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8:
5, 5, 5, 5
5 + 5 - 5 ÷ 5
5 + 5 - 1
10 - 1
9
10:
3, 3, 5, 8
3 + 3 - 5 + 8
6 - 5 + 8
6 + 3