Given: 9 - 4x = -19 Prove: x = 7 Solve for x in the equation 9 - 4x = - 19 Step 1: Group constants: We need to group our constants 9 and -19. To do that, we subtract 9 from both sides -4x + 9 - 9 = -19 - 9 Step 2: Cancel 9 on the left side: -4x = -28 Step 3: Divide each side of the equation by -4 -4x/-4 = -28/-4 x = 7
