Question

Resolva as inequações:
a)4x-3<17
b)3y-4<5y+6
c)25-2a<10-7a
d)3c+13

Answer 1

a)4x-3<17
4x<17+3
4x<20
x<20/4=5

b)3y-4<5y+6
3y-5y<6+4
(-)-2y<10
2y<10
y<10/2=5

c)25-2a<10-7a
-2a+7a<10-25
5a<-15
a<-15/5=-3

d)3c+13<c+7
3c-c<7-13
2c<-6
c<-6/2=-3