(-3)k+ 1 x (-3) = (-3)7 (what is the value of k)
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( - 3 ) k + 1 × ( - 3 ) = ( - 3 ) 7
- 3k - 3 = - 3 × 7
- 3k - 3 = - 21
- 3k = - 21 + 3
- 3k = - 18
k = - 18 / - 3
k = 6
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