1. Evaluate a + b if a = 7 and b = 3. a + b = 2. Evaluate a - b if a = 8 and b = 2. a - b = 3. Evaluate ab if a = 3 and b = -5. ab = 4. Evaluate 2a + b if a = 4 and b = -8. 2a + b = 5. Determine the value of y if x=12. y=3x+10 y = 6. Determine the value of x if y=-3 2x+3y=19 x = 7. Determine the value of x if y=5. y=2x+25 x= 8. Determine the value of y if x=-2. y=15x+24 y= |