Question

Resolva as inadequações
A)
3x-10 < -7 × + 20
B)
-6-3×> × + 14

Answer 1

Resposta:

A)

3x-10 < -7 × + 20

3x + 7x < 20 + 10

10x < 30

x < 30/10

x < 3

B)

-6-3×> × + 14

-3x - x > 14 + 6

-4x > 20 (-1)

4x < -20

x < -20/4

x < -5

Explicação passo-a-passo:

Answer 2

Resposta:

Olá, tudo bem?

a)7x+6\ \textgreater \ 4x+7\rightarrow 3x\ \textgreater \ 1\rightarrow \boxed{x\ \textgreater \ \dfrac{1}{3}}\\\\b)4(x-1)-2(3x+1)\ \textless \ 10\rightarrow4x-4-6x-2\ \textless \ 10\rightarrow\\\\-2x\ \textless \ 16\,\,(-1)\rightarrow 2x\ \textgreater \ -16\rightarrow \boxed{x\ \textgreater \ -8}

c)5x-3(x+6)\ \textgreater \ x-14\rightarrow 5x-3x-18\ \textgreater \ x-14\rightarrow \boxed{x\ \textgreater \ 4}\\\\d)x-18\ \textless \ -23\rightarrow \boxed{x\ \textless \ -5}\\\\e)13x-1\ \textless \ 9x+1\rightarrow 13x-9x\ \textless \ 1+1\rightarrow 4x\ \textless \ 2\rightarrow \boxed{x\ \textless \ \dfrac{1}{2}}

Qualquer dúvida, por favor, é só me comunicar, ok? Muito Agradecido!!