The solution for the equation x – y = - 4 and x+y = 10 are…………
(a) (7, 3) (b) (3, 7) (c) (6, 2) (d) (8, 2)
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Answer is a) (7,3).
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x-y= -4
x= -4+y
x+y=10
(-4+y)+y=10
-4+2y=10
2y=10+4
2y=14
y=14/2
y=7
x= -4+y = -4+7=3
Ans. x=3, y=7
x= -4+y
x+y=10
(-4+y)+y=10
-4+2y=10
2y=10+4
2y=14
y=14/2
y=7
x= -4+y = -4+7=3
Ans. x=3, y=7
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