Question

resolva as inequações
a) -6x+70>4
b) 8x+20<x-49
c)-10x+100>10x+100

Answer 1

a
-6x > 4 - 70
-6x > -66
6x < 66
x < 66/6
x< 11 ****
b
8x + 20 < x - 49
8x - x < -49 - 20
7x < -69
x < -69/7 ****

c
-10x + 100 > 10x + 100
-10x - 10x > 100 - 100
-20x > 0
20x < 0
x < 0/20
x< 0