Răspuns:
Explicație pas cu pas:
a)
3x - 2x ≤ 1 - 3
x ≤ -2
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4x - 3x ≥ -2 - 2
x ≥ -4
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Solutia - 4 ≤ x ≤ -2
x = [-4, -2] interval inchis in -4 si -2
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d)
17x - 12x > 2 - 1
5x > 1
x > 1/5
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9x - x > 3 - 1
8x > 2
x > 2/8
x > 1/4
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Solutia x > 1/4
x = (1/4, +∞)
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g)
7x + 3x < 57 + 2
10x < 59
x < 59/10
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22x - 2x < 47 + 1
20x < 48
x <48/20
x < 24/10
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Solutia x < 24/10
x = (-∞, 24/10)
