Question

resolva a equação : -2x = 13 (menos dois x igual a treze)

Answer 1

Resposta:

$x=-\frac{13}{2}$

Explicação passo-a-passo:

$vou \ mostrar \ duas \ formas \ diferentes \ de \ calcular:$

$-2x=13\\\\-2x-13=0\\\\(-2) \ . \ x+ (-13)=0\\\\x=\frac{-(-13)}{-2} \\\\x=-\frac{13}{2}$

$-2x=13\\\\\frac{-2x}{-2} =\frac{13}{-2} \\\\x=-\frac{13}{2}$