Graphical and algebraic methods — substitution, elimination, cross-multiplication.
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Q1 · Pair of Linear Equations in Two Variables (Class 10) · MEDIUM
The pair of equations x + 2y = 5 and 2x + 4y = 10 has:
Q2 · Pair of Linear Equations in Two Variables (Class 10) · HARD
If 2x + 3y = 12 and 5x - 2y = 1, then what is the value of x + y?
Q3 · Pair of Linear Equations in Two Variables (Class 10) · EASY
What is the value of x in the equation 2x + 3 = 11?
Q4 · Pair of Linear Equations in Two Variables (Class 10) · MEDIUM
For what value of k will the pair of equations 3x + 4y = 12 and kx + 12y = 30 have infinitely many solutions?