Question

7. x + 45 = 59
qual o valor de X ?​

Answer 1

7. x + 45 = 59

7x + 45 = 59

7x = 59 - 45

7x = 14

x = 14

----

7

x = 2

Answer 2

Resposta:

$7x+45=59\\\\\mathrm{Subtrair\:}45\mathrm{\:de\:ambos\:os\:lados}\\\\7x+45-45=59-45\\\\\mathrm{Simplificar}\\\\7x=14\\\\\mathrm{Dividir\:ambos\:os\:lados\:por\:}7\\\\\frac{7x}{7}=\frac{14}{7}\\\\\mathrm{Simplificar}\\\\x=2$