Hard
Solve the pair of linear equations for x: 4x + 3y = -4 and 3x + -2y = -20.
Explanation
Explanation
Using the elimination method: multiply the first equation by -2 and the second by 3, then subtract to eliminate y. Solving gives x = -4 (and correspondingly y = 4). You can verify: 4(-4) + 3(4) = -4 ✓ and 3(-4) + -2(4) = -20 ✓.
PRO TIP
Re-check your working by substituting the answer back into the original question.