Answer:
-33
Step-by-step explanation:
[1] -6
[2] -9
[3] -12
[4] -15
[5] -18
[6] -21
[7] -24
[8] -27
[9] -30
[10] -33
it just adding -3
ex: -6+-3= -9
hope this helped
-18 is the fifth one add -3 and its -21 which is the 6th one. then you keep going and get -33.
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