Question

Resolva as inequações :

a) -5 < 10

b) 7x-3 < 4x + 3

c) -5x +3 < 53

d) 8- 3x > 2

e) 2x -3 > 3x-2

f) 1 -2x > -7

Answer 1

A_-5<10
-5x<10
-x<10/-5
-x<-2
x>2
_______________
B_7x-3<4x+3
7x-4x<+3+3
3x<6
x<6/2
x<3
___________________________
c_-5x+3<53
-5x<53-3
-5x<50
-x<50/-5
-x<-10
x>10
___________________
d_8-3x>2
-3x>2-8
-3x>-6
-x>-6/-3
-x>2
x<-2
____________________
e_2x-3>3x-2
2x-3x>-2+3
-x>1
x<-1
___________________
f_1-2x>-7
-2x>-7-1
-2x>-8
-x>-8/-2
-x>4
x<-4