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5 October, 04:50

What is a? how do you solve it?

1/9a-7=1

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  1. 5 October, 05:50
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    1/9a - 7 = 1 ... add 7 to both sides

    1/9a = 1 + 7

    1/9a = 8 ... now multiply both sides by 9, eliminating the 1/9 on the left

    a = 8 * 9

    a = 72 <==
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