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Mathematics
Fernanda Wright
7 September, 00:20
What is 7 (4j + 1 + 9j) as a verbal expression?
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Kaylynn Avila
7 September, 01:01
0
To find j:
First you need to add 4j and 9j
7 (4j + 1 + 9j)
= 7 (13j + 1)
Then you have to multiply 7 by the parenthesis
7 (13j + 1)
= 91j + 7
You need now to transfer 7 to the other side of the equal and 7 become the opposite
91j + 7
91j = - 7
now we have to isolate the j so you need to divide by 91 the two sides
91j = - 7
j = - 1/13
if you want to find the answer that gives an integer, replace j with the result found and make the equation
7 (4j + 1 + 9j)
7[4 (-1/13) + 1 + 9 (-1/13) ]
7 (-4/13 + 1 - 9/13)
7 (0)
= 0
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