Solve by cross-multiplication: $x + y = 4,\ 2x - y = 5$. $x$ equals

Solve by cross-multiplication: $x + y = 4,\ 2x - y = 5$. $x$ equals
  1. $3$
  2. $2$
  3. $1$
  4. $4$

Solution

Add: $3x = 9 \Rightarrow x = 3$.

Asked in: MH-SSC-9

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