Question #316325

4. Solve the following system of equations.

50𝑥+20𝑦=1800 10𝑥+3𝑦=300


1
Expert's answer
2022-03-24T16:08:34-0400

{50x+20y=1800,10x+3y=300;    \begin{cases} 50x+20y=1800, \\ 10x+3y=300; \end{cases} \implies


{50x+20y=1800,50x+15y=1500;    \begin{cases} 50x+20y=1800, \\ 50x+15y=1500; \end{cases} \implies


{50x+20y=1800,5y=300;    \begin{cases} 50x+20y=1800, \\ 5y=300; \end{cases}\implies


{50x+20y=1800,y=60;    \begin{cases} 50x+20y=1800, \\ y=60; \end{cases}\implies


{50x+1200=1800,y=60;    \begin{cases} 50x+1200=1800, \\ y=60; \end{cases} \implies


{x=12,y=60.\begin{cases} x=12, \\ y=60. \end{cases}


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