PLEASE HELP i really need help with this question

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

What is not true about kl and mn? what is mn? (show )

Solve 13 + w/7= -18 (w/7 is a fraction)