Answer:
5. option B and 6. option A
Explanation:
5. x = 7
4 + x = 11
4 - 4 + x = 11 - 4
x = 7
6. K - 8.79 = 12.5
K - 8.79 + 8.79 = 12.5 + 8.79
K = 21.29
Hope this helps, thank you :) !!
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