Simplify the following 1.1) 4m-n+8n-9m
1.2) ab+(a²-2b)
1.3) 4d-d (2d+2)
1.4)4(b-2)+6(b+1)
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Q.1.1

Q 1.2

this can't be simplified.

Q. 1.3

Q.1.4

part 1 answer = 8

part 2 answer = 72

step-by-step explanation:

part 1 explanation = add all of the numbers, then divide by how many numbers you have. so, 200/25 = 8.

part 2 explanation = not gonna lie, this is hard to explain, so just google how to do it.

i dont understand the question? ?

step-by-step explanation: