Question

Quero saber o resultado 23×=90-17×

Answer 1

$\sf23x=90-17x$

$\sf23x+17x=90$

$\sf 40x=90$

$\sf x=\dfrac{90}{40}$

Simplificando por 10:

$\sf x=\dfrac{90\div10 }{40\div10}$

$\red{\sf x=\dfrac{9}{4}}\leftarrow\sf resposta$