Penjelasan dengan langkah-langkah:
1.) 4x + 7 + 5x + 8
4x + 5x + 7 + 8
= 9x + 15
2.) -3a + 5 + 9a -2
-3a + 9a + 5 - 2
= 6a + 3
3.) 2x - 12 - 6x + 15
2x - 6x - 12 + 15
= -4x + 3
4.) -a + 2 - 3 -8a
-a - 8a + 2 - 3
= -9a - 1
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Penjelasan dengan langkah-langkah:
1.) 4x + 7 + 5x + 8
4x + 5x + 7 + 8
= 9x + 15
2.) -3a + 5 + 9a -2
-3a + 9a + 5 - 2
= 6a + 3
3.) 2x - 12 - 6x + 15
2x - 6x - 12 + 15
= -4x + 3
4.) -a + 2 - 3 -8a
-a - 8a + 2 - 3
= -9a - 1