We don't really have to solve it because we can try out the pairs and get D(6,6).
OK, let's solve it.
3y = 6x - 18
7y = 6x + 6
Subtracting,
4y = 24
y = 6
6x = 7y- 6 =7(6)-6=36
x=6
Choice D(6,6)
6.2m questions
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