5 points
1 answer:
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Some useful relations and identities:
By the first relation, we have
Applying the two latter identities, we get
We can apply the third identity again:
and this is probably as far as you have to go, but by no means is it the only possible solution.
3(5y + 6) - 4
First, distribute so that it will make the solving easier.
Second, since parentheses indicate multiplication, '3 × 5y = 15y'.
Third, multiply '3 × 6' to get '18'.
Fourth, subtract '18 - 4' to get '14'.
Answer: C) 15y + 14
First, distribute so that it will make the solving easier.
Second, since parentheses indicate multiplication, '3 × 5y = 15y'.
Third, multiply '3 × 6' to get '18'.
Fourth, subtract '18 - 4' to get '14'.
Answer: C) 15y + 14