1. 3(x+5) = 3x+15 (expanding brackets) So it would be 2x+10 = 3x+15 2. 2x+10-10= 3x+15-10 (subtract 10 from both sides) So it would be 2x= 3x+5 3. 2x-3= 3x+5-3x (subtract 3x from both sides) So it would be -x= 5 4. -x/-1= 5/-1 (divide by negative 1 to make x positive) So it would be x= -5