Masih ga paham cara ngerjain soal kek gini

<p>jika h(x) = 3 - 2x maka</p><p>a. h(3) = 3 - 2.(3), x diubah menjadi konstanta 3</p><p>&nbsp; &nbsp; &nbsp;h(3) = 3 - 6</p><p>&nbsp; &nbsp; &nbsp;h(3) = -3</p><p>&nbsp;</p><p>b. a jika h (a) = 15 maka</p><p>&nbsp; &nbsp; &nbsp;h(a) = 3 - 2(a), x diubah menjadi a karena var berubah menjadi a</p><p>&nbsp; &nbsp; &nbsp;15 = 3 - 2a</p><p>&nbsp; &nbsp; &nbsp;15 - 3 = 2a</p><p>&nbsp; &nbsp; &nbsp;12 = 2a</p><p>&nbsp; &nbsp; &nbsp;a = 12 : 2</p><p>&nbsp; &nbsp; &nbsp;a = 6</p>