Answer:

Step-by-step explanation:
The steps are not shown. So, I will solve from scratch
Given

Required
Solve, with steps

Apply distributive property


Collect like terms


Divide both sides by 7


Answer:
what?
Step-by-step explanation:
..................................................
The answer would be 42a+11
7 1/2 the rule is add two and a half: +2 1/2
Answer:
the answer for 2 is 10, 4 is 20, 15 is 3
Explanation:
1:5=1x5
2:10=2x5 and so on