Question

resolva as inequações
A) 2x-15<-x
B) 6x-5-4x<3
C) -x-10>-2
D) 2x+x-5>19+5x
E) 4-3x>x+6
F) 3x+8<6+5x

com calculos pf

Answer 1

vou ver se eu consigo 

Answer 2

a)
$2x - 15 < - x \\ 2x + x < 15 \\ 3x < 15 \\ x < \frac{15}{3} \\ x < 5$
b)
$6x - 5 - 4x < 3 \\ 6x - 4x < 3 + 5 \\ 2x < 8 \\ x < \frac{8}{2} \\ x < 4$

d)
$2x + x - 5 > 19 + 5x \\ 3x - 5x > 19 + 5 \\ 2x > 24 \\ x > \frac{24}{2} \\ x > 12$
e)
$4 - 3x > x + 6 \\ - 3x - x > 6- 4 \\ - 4x > 2 \times ( - 1) \\ 4x < - 2 \\ x < \frac{ - 2}{4} \\ simplificando \\ x < - \frac{1}{2}$
f)
$3x + 8 < 6 + 5x \\ 3x - 5x < 6 - 8 \\ - 2x < - 2 \times ( - 1) \\ 2x > 2 \\x > \frac{2}{2} \\ x > 1$
c)