What expressions are equivalent tell me all if more than 1 : )

a) the first and last one : 6x + 9x and 15x

b) second and third one : 4*1 + 4*9y and 4 + 36y

pls mark brainliest!

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^