Question

Resolva as inequações considerando o conjunto universo U=A
a)3x-10》x-3
b)4 ×(x-2)《0
c)3x+1》2 ×(x-3)

Answer 1

a)3x-x>-3+10
2x>7
x>7/2
x>3.5

b)4x-8<0
4x<0+8
x<8/4
x<2

c)3x+1>2x-6
3x-2x>-6-1
1x=7
x=7/1
x=7