100 Things Blues Fans Should Know & Do Before They Die (100 Things...Fans Should Know)

100 Things Blues Fans Should Know & Do Before They Die (100 Things...Fans Should Know)

Matematika Sekolah Menengah Atas nilai a dari fungsi f(x) = 2x + 7 sehingga f(a) = -7 adalah?​

nilai a dari fungsi f(x) = 2x + 7 sehingga f(a) = -7 adalah?​

Jawaban:

-7

Penjelasan dengan langkah-langkah:

f(x) = 2x + 7

maka,

f(a) = 2a + 7

-7 = 2a + 7

2a = -7 -7

2a = -14

a = -7

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