What is the value of the expression below. 10 - 3 x 2 + 5. I came up with 19. but according to this fun test online, it is not correct.?

Science & Mathematics by Anonymous 2018-06-06 12:32:41

Social Science

7 answers

Anonymous

10 - 3 x 2 + 5 = 10 - 6 + 5 = 15 - 6 = 9.
Anonymous

10 - 3 x 2 + 5 = 9
Anonymous

10 - 3 x 2 + 5 =10 - (3 x 2) + 5 =10 - 6 + 5 =9
Anonymous

If the operations were done in order from left to right as they are, it's 19. But PEMDAS must be followed -- that means multiplication before addition and subtraction. 3 × 2 must be done first, then subtract and add and you should get 9.
Anonymous

Really? 10--6+5 = 9
Anonymous

9 not 19
Anonymous

The rules of operator precedence say you should perform multiplication/division first (left to right) and *then* addition/subtraction (left to right) So this expression is equivalent to: 10 - (3 x 2) + 5 = 10 - 6 + 5 = 4 + 5 = 9