Question

Cálculo de ×+3>-17 e 9+y<3y-16

Answer 1

Oi!

1)
x + 3 > - 17
x > - 17 - 3
x > - 20

S = { x ∈ ℝ/ x > -20}

2)
9 + y < 3y - 16
y - 3y < - 16 - 9
- 2y < - 25(-1)
2y > 25
y > 25/2

S = { x ∈ ℝ/ y > 25/2}

Answer 2

x+3>-17
x>-17-3
x>-20

e

9+y<3y-16
9+y-3y<-16
y-3y<-16-9
-2y<-16-9
-2y<-25
y=25/2