Medium
Solve the pair of linear equations for x: 3x + 2y = 10 and 3x + -1y = 4.
Explanation
Explanation
Using the elimination method: multiply the first equation by -1 and the second by 2, then subtract to eliminate y. Solving gives x = 2 (and correspondingly y = 2). You can verify: 3(2) + 2(2) = 10 ✓ and 3(2) + -1(2) = 4 ✓.
PRO TIP
Re-check your working by substituting the answer back into the original question.