Question

RESOLVA A INEQUAÇÃO U = Z
b) 6(x - 5) – 2(4x +2) ≥ 40​

Answer 1

Resposta:

$6(x - 5) - 2(4x + 2) \geqslant 40 \\ 6x - 30 - 8x - 4 \geqslant 40 \\ - 2x - 34 \geqslant 40 \\ - 2x \geqslant 40 + 34 \\ - 2x \geqslant 74 \\ - x \geqslant 74 \div 2 \\ - x \geqslant 37 \\ x < - 37$

Answer 2

6(x - 5) – 2(4x +2) ≥ 40

6x - 30 - 8x - 4 ≥ 40

6x - 8x ≥ 40 + 30 + 4

- 2x ≥ 70 + 4

- 2x ≥ 74(-1)

2x ≤ - 74

x ≤ - 74/2

x≤ - 37