s1581822 s1581822

20-05-2021
Mathematics

contestada

Find the value of the sum of the first 19 terms.(S19): -3 + 2 + 7 + 12

Respuesta :

airsplitking2 airsplitking2

20-05-2021

Answer

798

Step-by-step explanation:

-3+2+7+12+17+22+27+32+37+42+47+52+57+62+67+72+77+82+87

rule is +5

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