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^
Another question on Mathematics
Mathematics, 21.06.2019 15:40
Is it true that product of 3 consecutive natural numbers is always divisible by 6? justifyyour answer
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