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illustrative example 3: find the sum of 5/18a4b and 2/27a3b2c

Sagot :

Answer: The appropriate expression for the above problem is as follows:  

2x + 15 = 9      

Please note in your problem you are told the "sum of twice a number" which is 2 times any variable you select, and 15 which means to add. The word "is" means is "equal to."  

2x + 15 = 9  

     -15  = -15

2x = -6  

x = -3

We always want to check our work. Therefore, we substitute the -3 as the value for x in the above equation.  

2(-3) + 15 = 9

-6 +15 = 9  

9  = 9

Step-by-step explanation:

Answer:

1/54a³b × (15a+4bc)

Step-by-step explanation:

hope it helps