Question

Resolva as equações de 1° grau

1) 3x - 18 >0
2) 20x + 10 > 6x -24

Answer 1

1)

$\LARGE\tt{}3x - 18 > 0 \\ \LARGE\tt{}3x > 18 \\ \LARGE\tt{}3x \div 3 > 18 \div 3 \\ \LARGE\tt{}x > 18 \div 3 \\ {\large\boxed{\boxed{  { \LARGE \tt x > 6 }}}}$

2)

$\LARGE\tt{}20x + 10 > 6x - 24 \\ \LARGE\tt{}20x + 10 - 6x > - 24 \\ \LARGE\tt{}20x - 6x > - 24 - 10 \\ \LARGE\tt{}14x > - 24 - 10 \\ \LARGE\tt{}14x > - 34 \\ \LARGE\tt{}14x \div 14 > - 34 \div 14 \\ \LARGE\tt{}x > - 34 \div 14 \\\LARGE\tt{}x > - \dfrac{34}{14} \\ \\ {\large\boxed{\boxed{  { \LARGE \tt x > - \dfrac{17}{7} }}}}$

${\large\boxed{\boxed{  { \large \tt Bons~Estudos! }}}}$