find the value of x+y and x-y for 15x-17y=11,. 17 x-15y=21
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Answer:
15x+17y =21 .... (i)
17x+15y=11--(ii)
adding
15x+17y+ 17x+15y=21 +1 1
=>32x +32 Y = 32
X +y=1
subtracting eqi) from ii)
we get,
17x+15y-15x-17y=11-21
2x-2y= -10
X-y=. -5
Step-by-step explanation:
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