The sum of the fourth and eighth terms of an ap is 24
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a +3d + a+ 7d= 24
2a+ 10d=24
divide the equation by 2
a+5d=12
now you can solve this very easily by eliminating or substituting method
2a+ 10d=24
divide the equation by 2
a+5d=12
now you can solve this very easily by eliminating or substituting method
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