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a fost răspuns

Rezolvati inecuatiile: 3(x+15)>60, 2(x-4)>12, 4x+6<18, 15x+1<31, 4x+3>15

Răspuns :

1.
3(x+15)>60
3x+3*15>60
3x+45>60
3x>60-45
3x>15
x>15:3
x>5
2.
2(x-4)>12
2x-2*4>12
2x-8>12
2x>12+8
2x>20
x>20:2
x>10
3.
4x+6<18
4x<18-6
4x<12
x<12:4
x<3
4.
15x+1<31
15x<31-1
15x<30
x<30:15
x<2
5.
4x+3>15
4x>15-3
4x>12
x>12:4
x>3

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