Answer:
y = 15 and x = 22
Step-by-step explanation:
700 = 25x + 10y
x = y + 7
700 = 25(y +7) + 10y
700 = 35y + 175
525 = 35y
15 = y
700 = 25x + 150
550 = 25x
22 = x
D.
2=-2，3=-3
2²=-2²，3²=3²
37,50,65
13/4
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