Question

16. If 3x + 4y = 16 and 3x - 4y = 4, find the value of xy.
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Answer 1

Answer:

$6x = 20 \\ x = 20 \div 6 \\ x = 10 \div 3 \\ 8y = 12 \\ y = 12 \div 8 \\ y = 3 \div 2$

Answer 2

Step-by-step explanation:

This is the answer to ur question

xy=5.