diketahui m(n(x)) = n(m(x)). jika m(x) = 2x + a dan n(x) = 3x + 120 nilai a =
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diketahui m(n(x)) = n(m(x)). jika m(x) = 2x + a dan n(x) = 3x + 120 nilai a =
1 Jawaban
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1. Jawaban SadonoSukirno
m(n(x)) = n(m(x))
2(3x + 120) + a = 3(2x + a) + 120
6x + 240 + a = 6x + 3a + 120
6x - 6x + 240 - 120 = 3a - a
120 = 2a
a = 120/2 = 60