Question

Inequação me ajudem!
a) 3x/2 + 5/4 + x > 5x/8 + 5
b)2x/3 + 5 (simbolo de maior ou igual) x + 1/2

Answer 1

a)3x/2+5/4+x>5x/8+5
MMC(2,4,8)=8

4.3x+2.5+8.x>5x+40
12x+10+8x> 5x+40
12x+8x-5x>-10+40
15x>30
x>30/15
x>2

b)2x/3+5> ou igual x+1/2
MMC(3,2)=6
2.2x+6.5> ou igual 6.x+3.1
4x+30> ou igual 6x+3
4x-6x>ou igual -30+3
-2x>ou igual -27 (-1)
2xx