Ryans gym membership costs him $390 per year. He pays this in twelve equal installments a year. How much is each installment?
215
380
Ответы на вопрос:
12,2b
33x-3b=>3(11x-b)
56-32+8n+8=32+8n=8(4+n)
-12n²-6n+5n²+40n=36n-7n²=n(36-7n)
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