Question

Resolva as inequações.

a) 5X-4 ≥16

b) 2(X-1) + 4X ≥3(X+1)-3

Answer 1

a) 5x-4≥16
5x-≥16+4
5x≥20
x≥20÷5
x ≥ 4

b) 2(x-1)+4x≥3(x+1)-3
2x-2+4x≥3x+3-3
6x-2≥3x
6x-3x≥2
3x≥2
x ≥ 2/3