Question

a_ - × - 10> -2
b_ 4 - 3× > × + 6
c_ 3 × + 4 > 7 - 3 - 1
d_ 5× - 15 < 2× + 3 + 5
e_ 3× + 8 < 6 + 5×
mim ajudem por favor

Answer 1

a)

$- x > - 2 + 10 \\ - x > + 8 \: ( - 1) \\ x > - 8$

b)

$- 3x - x > + 6 - 4 \\ - 4x > 2 \: ( - 1) \\ 4x > - 2 \\ x > \frac{ - 2}{4} \\ x > - 0.5$

c)

$3x > 7 - 3 - 1 - 4 \\ 3x > - 1 \\ x > \frac{ - 1}{3}$

d)

$5x - 2x < + 3 + 5 + 15 \\ 3x < 23 \\ x < \frac{23}{3}$

e)

$3x - 5x < + 6 - 8 \\ - 2x < - 2 ( - 1) \\ 2x < 2 \\ x < \frac{2}{2} \\ x < 1$