Question

va rog si eu 7 inecuatii rezolvate varoggggggggggg plsssssss!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

3x - 2 < 7
Sol: 3x < 7 + 2
3x < 9 | : 3
x < 3
x = { 0,1,2 }
1.5x + 1 < 26
Sol: 5x < 26 - 1
5x < 25 | : 5
x < 5
x = { 0,1,2,3,4,5 }
2.2(3x - 7) < 10
Sol: 6x - 14 < 10
6x < 10 + 14
6x < 24 | : 6
x < 4
x = { 0,1,2,3 }
3.6[(2x + 1) x 3 - 5] + 8 < 356
Sol: 6(6x + 3 - 5 ) + 8 < 356
36x + 18 - 30 + 8 < 356
36x + 18 - 22 < 356
36x < 356 - 18 + 22
36x < 360 | : 36
x < 10
x = { 0,1,2,3,4,5,6,7,8,9,10 }


3x-5=10 => 3x = 10+5 =>3x= 15=> x= 5

7x+80= 10 => 7x = 10-80 => 7x = - 70 => x = -10

3(x+4)=15 => 3x + 12 = 15 => 3x = 15-12 => 3x = 3 => x=1

7(8 – x) = 2(x + 2)=> 56 – 7x = 2x + 4 => -7x – 2x = 4 – 56=> -9x = -52=> x=52/9