Answer: Addition, 128
Step-by-step explanation: with any question like this you are to do the opposite of what is tells you to do like when it said the sum your supposed to subtract the two numbers.
I hope this helps you
2. (-2).36-15
-144-15
-169
Answer: 7 is 29
8 is 37
Step-by-step explanation:
For 7 the sides are equal to eachother, so you need to do 20 = x - 9, giving x = 29
For 8 the angles are equal to eachother, so you need to do 60 = x + 23, giving x = 37
Answers A mark me brainliest
