Question

15x-30=10x+70
ME AJUDEM POR FAVOR

Answer 1

Resposta:

X=20

Explicação passo-a-passo:

15x-30=10x+70

15x-10x=70+30

5x=100

X=100÷5

X=20

Answer 2

$\boxed{\boxed{Ola\´ \: \: Erik} }$

$15x -30 = 10x + 70 \\ \Leftrightarrow 15 -10x = 70 + 30 \\ \Leftrightarrow (15 10)x = 100 \\ \Leftrightarrow 5x = 100 \\ \Leftrightarrow x = \frac{100}{5}$

$\Leftrightarrow \boxed{\boxed{x= 20} }} \end{array}\qquad\checkmark$

$\textbf{Bons estudos}$ !

Answer 3

$\boxed{\boxed{Ola\´ \: \: Erik} }$

$15x -30 = 10x + 70 \\ \Leftrightarrow 15 -10x = 70 + 30 \\ \Leftrightarrow (15 10)x = 100 \\ \Leftrightarrow 5x = 100 \\ \Leftrightarrow x = \frac{100}{5}$

$\Leftrightarrow \boxed{\boxed{x= 20} }} \end{array}\qquad\checkmark$

$\textbf{Bons estudos}$ !