Question

Resolva as inequaçoes em u=z: a) 2× + 5 > -3× + 40 b) 6(× - 5) -2( 4× +2) > 80.

Answer 1

a) 
2x + 5 > -3x + 40
2x +3x > 40-5
5x > 35
x > 35/5
x > 7

b)
6(x- 5) -2( 4x +2) > 80
6x-30 - 8x - 4 > 80
-2x - 34 > 80
-2x > 80+34
-2x > 104 (-1)
2x < -114
x < -114/2
x< - 57

Abraço :)