Question

I need help on this.

Answer 1

On the second step there is a mistake. You have to multiply 2 times 2 before you add the five

Answer 2

See below;

Explanation:

We are given the following;

5 + [ 2 * 2 + 5 ], ⇒ add 2 and 5

5 + [ 2 * 7 ], ⇒ multiply 2 by 7

5 + 14, ⇒ combine like terms

Solution; 19

Now as we can see from the first ⇒ second step the process as to simplify the expression 5 + [ 2 * 2 + 5 ] further, was by adding 2 and 5. Of course by PEDMAS, it would be that multiplication takes place before that of addition, so that it should have been that 2 was multiplied by 2 first!

Solution below;

Steps | |

| 5 + [ 2 * 2 + 5 ] |

X | 5 + [ 2 * 7 ] |

| 5 + 14 |

| 19 |