Question

Resolva as seguintes inequaçao

A) 8X -5 > 6X + 1

B) 7X - 13 < 3X - 1

C) 5X - 5 > 9 + 3X

D) 5 ( 2X - 3 ) > 3X - 8

Answer 1

Oiê

A)
$8x - 5 > 6x + 1 \\ 8x - 6x > 1 + 5 \\ 2x > 6 \\ x > \frac{6}{2} \\ x > 3$

B)
$7x - 13 < 3x - 1 \\ 7x - 3x < - 1 + 13 \\ 4x < 12 \\ x < \frac{12}{4} \\ x < 3$

C)
$5x - 5 > 9 + 3x \\ 5x - 3x > 9 + 5 \\ 2x > 14 \\ x > \frac{14}{2} \\ x > 7$

D)
$5(2x - 3) > 3x - 8 \\ 10x - 15 > 3x - 8 \\ 10x - 3x > - 8 + 15 \\ 7x > 7 \\ x = \frac{7}{7} \\ x = 1$

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