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tensa zangetsu [6.8K]
3 years ago
8

X + y = k

Mathematics
1 answer:
kherson [118]3 years ago
5 0
X + y = k
x - y = k Add these two equations.
2x = 2k Divide both sides by 2
2x/2 = 2k/2
x = k

x + y = k
k + y = k Subtract k from both sides.
y = 0


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