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2x-4x=5+17
-2x=22//:-2
x=-11
b)3x+34= -2x-11
3x+2x=-34-11
5x=-45//:5
x=-9
c)4x-5-7x=2-5x-23
4x-7x+5x=5+2-23
2x=-16//:2
x=-8
d)4x-5+2x=4-7x+31
4x+2x+7x=5+4+31
13x=40
x=40/13
e)3x-15>5x-33
3x-5x>15-33
-2x>-18//-2
x>9
g) 6x+7-7x>2-4x-17
6x+4x-7x>-7+2-17
3x>-12//3
x>-4
f )5x-7 ≥ 8x+11
5x-8x≥7+11
-3x≥18//-3
x≥-6
h ) -4x-11+3x ≤ 3-2x-24
-4x+3x+2x≤11+3-24
x≤-10
mam nadzieje ze pomoglam pozdrawiam. ;)
2x-4x=17+5
-2x=22 | : -2
x = -11
b)3x+34= -2x-11
3x+2x =-11-34
5x= -45 | :5
x= -9
c)4x-5-7x=2-5x-23
4x-7x+5x=-23+2+5
2x= -16 | :2
x= -8
d)4x-5+2x=4-7x+31
4x-2x+7x=4-31+5
9x = 32 | :9
x= 3,55
e)3x-15>5x-33
3x-5x>-33+15
-2x > -18 | :-2
x > 9
f )5x-7 ≥ 8x+11
5x-8x ≥ 11+7
-3x ≥ 18 | :-3
x ≥ -6
g) 6x+7-7x>2-4x-17
6x-7x+4x > 2+17-7
3x > 12 | :3
x > 4
h ) -4x-11+3x ≤ 3-2x-24
-4x+3x+2x ≤ 3-24+11
x ≤ 10