– diketahui f(x)= 7 x – 15.Jika nilai f(x) = 55, maka nilai x adalah…
A.6
B.9
C.10
D.11
pakai caranya ya kak
Quis :
f(x)= 7 x – 15
7x – 15 = 55
7x = 55 + 15
7x = 70
x = 10
C
CMIIW
Jawaban:
C. 10
Penjelasan dengan langkah-langkah:
f(x) = 7x – 15
f(x) = 55
55 = 7x – 15
70 = 7x
10 = x
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