Solve $4x + 3y = 24,\ 2x - y = 7$. $x$ equals

Solve $4x + 3y = 24,\ 2x - y = 7$. $x$ equals
  1. $\dfrac{9}{2}$
  2. $3$
  3. $5$
  4. $4$

Solution

Multiply 2nd by $3$: $6x - 3y = 21$. Add to first: $10x = 45 \Rightarrow x = 4.5$.

Asked in: MH-SSC-9

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