diketahui suatu fungsi f(x)=-2x+3,jika f(a)=-7 maka nilai a adalah...

Fungsi.

f(x) = -2x + 3
f(a) = -2a + 3
-7 = -2a + 3
a = 5

f(x) = -2x + 3
f(a) = -7
f(a) = -2a + 3 = -7
-2a = -7 -3
-2a = -10
2a = 10
a = 10/2
a = 5

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