Question

a)2x-3>6

b)7x+8>3x+5=

c)3x-21+2x>10-4x

d)2x+7<3x-3=

e)7x-8<11x+7=

resolva as inequações

Answer 1

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) 3x - 21 + 2x > 10 - 4x
3x + 2x +4x > 10 + 21
9x > 31
x > 31/9

d) 2x + 7 < 3x - 3
2x - 3x < - 3 - 7
- x < - 10 . (-1)
x > 10

e) 7x - 8 < 11x + 7
7x - 11x < 7 + 8
- 4x < 15 . (-1)
4x > - 15
x > - 15/4