Aritmetika tolong mastah,yang dilingkarin.... Question from @dtxero99

October 2018 2 22 Report

Aritmetika tolong mastah,yang dilingkarin

Brillianttt Karena Un = a+ (n-1)b maka
a+6b = 40
a+3b = 19
--------------- -
3b = 21
b = 7

1 votes Thanks 1

novianita51 $u4=19 \\ u7=40 \\ \\ u4=19 \\ a+3b=19 \\ \\ u7=40 \\ a+6b=40 \\ \\ a+6b=40 \\ a+3b=19(dikurangkan) \\ 3b=21 \\ b=21/3 \\ b=7$

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