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a fost răspuns

Sa se rezolve inecuatia 8 (7x+8x)÷

Răspuns :

Economist
8( 7X + 8X ) + 15 ≤ 9 + 8X
8 · 15X + 15 ≤ 9 + 8X
120X + 15 ≤ 9 + 8X
120X - 8X ≤ 9 - 15
112X ≤- 6
X≤ - 6 / 112
X ≤ - 3/ 56 ⇒ X∈ ( - 00, - 3/56 ]
Deva
8(7x+8x):15<sau=9+8x
(8x15x):15<sau=9+8x
8x<sau=9+8x
8x-8x<sau=9
0<sau=9
x=0,1,2,3,4,5,6,7,8.9

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