If x/a+y/b=2, ax-by=a²-b², then y=?
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Answer:
y = b
Step-by-step explanation:
bx + ay = 2ab
abx + a²y = 2a²b ----- (1)
ax - by = a² - b²
abx - b²y = a²b - b³ ----- (2)
(1) - (2)
a²y + b²y = a²b + b³
(a²+b²) y = (a²+b²)b
y = b
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