in. an. so. if. the. common. difference. is -4. and the seventh term. is. 4. then find the first term
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Answered by
3
d = (-4)
T7 = 4
=> a + 6d = 4
=> a + 6(-4) = 4
=> a - 24 = 4
=> a = 4 + 24
=> a = 28
First term = 28
T7 = 4
=> a + 6d = 4
=> a + 6(-4) = 4
=> a - 24 = 4
=> a = 4 + 24
=> a = 28
First term = 28
Answered by
1
given d=-4
t7 =4 let a be the first term :
a+6d = 4
a+6 (-4)=4
a-24=4
a=4+24
therefore a= 28.........then the first term is 28
t7 =4 let a be the first term :
a+6d = 4
a+6 (-4)=4
a-24=4
a=4+24
therefore a= 28.........then the first term is 28
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