2(x - 3) + 3(x + 5) < 2(x - 6)
2(x) - 2(3) + 3(x) + 3(5) < 2(x) - 2(6)
2x - 6 + 3x + 15 < 2x - 12
-6 + 3x + 15 < -12
(-6 + 15) + 3x < -12
15 - 6 + 3x < -12
9 + 3x < -12
x < -12 - 9/3
x < -21/3
x < -7/1
x < -7
Jawab:
Nilai x adalah x < -7 (-8, -9, -10, -11, ....)
Penjelasan dengan langkah-langkah:
2x - 6 + 3x + 15 - 2x + 12 < 0
3x + 21 < 0
3x < -21
x < -21 : 3
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2(x - 3) + 3(x + 5) < 2(x - 6)
2(x) - 2(3) + 3(x) + 3(5) < 2(x) - 2(6)
2x - 6 + 3x + 15 < 2x - 12
-6 + 3x + 15 < -12
(-6 + 15) + 3x < -12
15 - 6 + 3x < -12
9 + 3x < -12
x < -12 - 9/3
x < -21/3
x < -7/1
x < -7
Jawab:
Nilai x adalah x < -7 (-8, -9, -10, -11, ....)
Penjelasan dengan langkah-langkah:
2(x - 3) + 3(x + 5) < 2(x - 6)
2x - 6 + 3x + 15 < 2x - 12
2x - 6 + 3x + 15 - 2x + 12 < 0
3x + 21 < 0
3x < -21
x < -21 : 3
x < -7