y + 1 + 4 (or y + 5)
6r * 7 (or 42r)
Step-by-step explanation:
The first one you can remove the brackets for completely as there are no negative signs:
y + 1 + 4
Then just collect like terms (1 and 4):
= y + 5
The second one can be re-written like this:
6r * 7
Now you can simply just multiple 6r by 7:
= 42r
