Answer
$7d+1.2$
Work Step by Step
We start with the given expression: $1.1+(7d+0.1)$
The commutative property of addition states that changing the order of the addends does not affect the sum.
We use this property to rearrange the addends: $(7d+0.1)+1.1$
The associative property of addition states that changing the grouping of the addends does not affect the sum.
We use this property to group the addends differently: $7d+(0.1+1.1)$
We use the order of operations to simplify:
We simplify inside the parentheses: $7d+1.2$
