Question

Resolva as inequações

a) 5x+30<3x+62


b) 2x-10>4x-30

Answer 1

a)

5x + 30 < 3x + 62

5x - 3x < 62 - 30

2x < 32

x < $\frac{36}{2}$  

x < 16

b)

2x - 10 > 4x - 30

2x - 4x > - 30 + 10

(*-1) - 2x > - 20 (*-1)

2x > 20

x > $\frac{20}{2}$

x > 10