Solve 5(x+3)<60

Firstly you would want to expand the bracket. You would do this by multiplying (x+3) by 5. This would give you 5x + 15 on the left hand side.To solve for x, it would be easiest to have all the x terms on one side of the equation. As you have 5x + 15 < 60 you need to take away 15 from the left hand side to leave your with just 5x on the left. However, if you always want to make sure the inequality is true, then if you do anything to the right you also have to do it to the left. This would then give you 5x < 45.As you want to solve for x, you need to get rind of the positive 5 co-efficient. You would do this by dividing both sides by 5. This would give you x < 9.