Everything you need to do is to follow the orders of operations: Parenthesis, multiplication and division, and at last addition and subtraction. 7+(8-4)*10 First let's get ride of the parenthesis (8-4): (8-4) = 4 So 7 + (8-4) * 10 = 7 + 4 * 10 Then, you calculate everything that is related to a multiplication or a division. In this equation, we only have 1 multiplication (4*10) but no divisions. 4*10 = 40 So 7 + 4 * 10 = 7 + 40 And now you calculate this addition: 7 + 40 = 47.
