Question

4. Resolva o sistema de Equação: X + Y = 60
2X - Y = 2


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Answer 1

$\Large\boxed{\begin{array}{l}+\underline{\begin{cases}\sf x+\backslash\!\!\!y=60\\\sf 2x-\backslash\!\!\!y=2\end{cases}}\\\sf 3x=62\\\sf x=\dfrac{62}{3}\\\\\sf x+y=60\\\sf \dfrac{62}{3}+y=60\cdot3\\\sf 62+3y=180\\\sf 3y=180-62\\\sf 3y=118\\\sf y=\dfrac{118}{3}\\\\\sf S=\bigg\{\dfrac{62}{3},\dfrac{118}{3}\bigg\}\end{array}}$