Question

a)x-3=10 b)2x+4 <0 cauculo

Answer 1

a) x-3=10
x=10+3
x=13
b) 2x+4<0
2x < -4
x<-4/2
x<-2

Answer 2

a)
x - 3 = 10
x = 10 + 3
x = 13
======================
b)
2x + 4 < 0
2x < - 4
x < - 4/2
x < - 2

Resp.:  

a) x = 13
b)x < - 2