3. Solve the simultaneous equations \[ \begin{array}{l} 4 x+7 y=1 \\ 3 x+10 y=15 \end{array} \]
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First, let's multiply the first equation by 3 and the second equation by 4 to eliminate the x term: \[ \begin{array}{l} 12x + 21y = 3 \\ 12x + 40y = 60 \end{array} \] Now, subtract the first equation from the second equation: \[ (12x + 40y) - (12x + 21y) = 60 - Show more…
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