Easy
Solve the pair of linear equations for x: 5x + 3y = 24 and 4x + -1y = 9.
Explanation
Explanation
Using the elimination method: multiply the first equation by -1 and the second by 3, then subtract to eliminate y. Solving gives x = 3 (and correspondingly y = 3). You can verify: 5(3) + 3(3) = 24 ✓ and 4(3) + -1(3) = 9 ✓.
PRO TIP
Re-check your working by substituting the answer back into the original question.