Question

o conjunto solução da equação do 1° grau:
5x -10=15, é?

Answer 1

Resposta: S={5}

$5x-10=15\\\\5x=10+15=25\\\\x=\frac{25}{5}=5\\ \\S=[5]$

Answer 2

$\large\boxed{\begin{array}{l} \sf{5x - 10 = 15} \\ \\ \sf{5x = 15 + 10} \\ \\ \sf{5x = 25} \\ \\ \sf{x = \dfrac{25}{5} } \\ \\ \boxed{ \boxed{ \boxed{ \boxed{ \sf{X = 5}}}}}\leftrightarrow \boxed{ \boxed{ \boxed{ \boxed{ \sf{S= \{5 \}}}}}}\end{array}}$