In an apartment given a=2 and n= 8 and s=192 find d
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a=2
n=8
s=192
d=?
sn=n/2(2a+(n-1)×d)
192=8/2(2(2)+(8-1)d
192 =4(4+7d)
192-4=4+7d
188=4+7d
188-4=7d
184=7d
184/7=d
n=8
s=192
d=?
sn=n/2(2a+(n-1)×d)
192=8/2(2(2)+(8-1)d
192 =4(4+7d)
192-4=4+7d
188=4+7d
188-4=7d
184=7d
184/7=d
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