Answer:
12
Step-by-step explanation:
I think you have to use the product rule for counting- which is where you multiply the two numbers. I'm not sure if this is right but I hope I helped
Answer:
a 5
Step-by-step explanation:
Solving
we get x=6
Step-by-step explanation:
We need to solve 
Solving:
Cross multiply both terms:

Verifying the solution:
Putting x=6 in the question given:




Solving
we get x=6
Keywords: Solving equations
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Answer:
199
Step-by-step explanation:
49 + 64 + 81 - 36 +25+16
194 - 36 +25 + 16
-36 + 25 + 16
= -11 + 16 = 5
194 + 5 = 199