Question

A soma de dois numeros é 62 e a diferenca entre eles é igual a 24 .X+y=62 2x-y=24

Answer 1

Bom Dia!

$\left\{\begin{matrix}x+y=62\\x-y-24\\\end{matrix}\right.$

$\left\{\begin{matrix}x+y=62(*-1)\\x-y-24\\\end{matrix}\right.$

$\left\{\begin{matrix}-x-y=-62\\x-y-24\\\end{matrix}\right.$

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-y-y = -62+24

-2y = 38 (-1)

2y = -38

y = -38/2

y = -19

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x+y = 62

x +(-19) = 62

x-19 = 62

x = 62+19

x =  81

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Att;Guilherme Lima