Question

Gente me ajudem pfv

A)2x - 18 > 4x - 38

B)4x > 2 ( x+10 )

C)11x > 3x + 400

D)2x + 5 < - 3x + 40

E)6 ( x - 5 ) - 2 ( 4x + 2 ) > 100

Answer 1

$2x - 18 \ \textgreater \ 4x - 38 - 18 + 38 \ \textgreater \ 4x-2x 20 \ \textgreater \ 2x 20/2 \ \textgreater \ x 10 \ \textgreater \ x -------------------------------------- 4x \ \textgreater \ 2 ( x + 10 ) 4x \ \textgreater \ 2x + 20 4x - 2x \ \textgreater \ 20 2x \ \textgreater \ 20 x \ \textgreater \ 20/2 x \ \textgreater \ 10 --------------------------------------- 11x \ \textgreater \ 3x + 400 11x - 3x \ \textgreater \ 400 8x \ \textgreater \ 400 x \ \textgreater \ 400/8 x \ \textgreater \ 50 ------------------------------------------------- 2x + 5 \ \textless \ - 3x + 40 2x + 3x \ \textless \ 40 - 5 5x \ \textless \ 35 x \ \textless \ 35/5 x \ \textless \ 7 ----------------------------------------------------$

A ultima questão não coube irei colocar nos comentários.

bons estudos!