Equation unknown Ms. Owens has some butterflies 7 of them fly away Now she has 12 butterflies left How many butterflies did she start with?

19

Step-by-step explanation:

You just have to add 12 and 7 to get 19

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.