Resolva as inequações:
a) 2x-3<6
b) 7x+8->3x+5
c) 3(x-7_+2x-<10-4x
d x/4+2x>15
e)7x-8<11x+7
f)5(4-2x)->4x+3
g)x/4+2>3x-9
h)7(3x+2)>14-4(5x+3)
Respostas
respondido por:
16
a)
2x-3<6
2x<6+3
2x<9
x<9/2
b)
7x+8>3x+5
7x-3x>5-8
4x>-3
x>-3/4
c)
3(x-7+)2x<10-4x
3x-21+2x<10-4x
5x-21<10-4x
5x+4x<10+21
9x<31
x<31/9
d)
x/4+2x>15
4*x/4+2x>4*15
x+8x>60
9x>60
x>60/9
x>20/3
e)
7x-8<11x+7
7x-11x<7+8
-4x<15
x>-15/4
f)
5(4-2x)>4x+3
20-10x>4x+3
-10x-4x>3-20
-14x>-17
x<17/14
g)
x/4+2>3x-9
4*x/4+4*2>4*3x-4*9
x+8>12x-36
x-12x>-36-8
-11x>-44
(-1)
x<4
h)
7(3x+2)>14-4(5x+3)
21x+14>14-20x-12
21x>-20x-12
21x+20x>-12
41x>-12
x>-12/41
2x-3<6
2x<6+3
2x<9
x<9/2
b)
7x+8>3x+5
7x-3x>5-8
4x>-3
x>-3/4
c)
3(x-7+)2x<10-4x
3x-21+2x<10-4x
5x-21<10-4x
5x+4x<10+21
9x<31
x<31/9
d)
x/4+2x>15
4*x/4+2x>4*15
x+8x>60
9x>60
x>60/9
x>20/3
e)
7x-8<11x+7
7x-11x<7+8
-4x<15
x>-15/4
f)
5(4-2x)>4x+3
20-10x>4x+3
-10x-4x>3-20
-14x>-17
x<17/14
g)
x/4+2>3x-9
4*x/4+4*2>4*3x-4*9
x+8>12x-36
x-12x>-36-8
-11x>-44
(-1)
x<4
h)
7(3x+2)>14-4(5x+3)
21x+14>14-20x-12
21x>-20x-12
21x+20x>-12
41x>-12
x>-12/41
danysobrinho20:
<3 <3 <3 <3 <3 <3 <3 <3
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