0MHXZGO
Respondido

resolva:
[tex]x + y = 10 \\ 20 \times + 5y = 140[/tex]
me ajuda plssss​

Resolvatexx Y 10 20 Times 5y 140texme Ajuda Plssss class=

Resposta :

[tex]x + y = 10\\20x + 5y = 140\\\\\frac{20x + 5y}{5} = \frac{140}{5} \\4x + y = 28\\y = 28 - 4x\\\\x + (28 - 4x) = 10\\-3x = -18\\x = \frac{18}{3}\\x = 6\\\\6 + y = 10\\y = 4[/tex]

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