0
Anonymous
The answer is the numerical value of 'j' that makes the equation a true statement.
-4j = 18 + 5j
Add 4j to each side:
0 = 18 + 9j
Subtract 18 from each side:
-18 = 9j
Divide each side by 9:
-2 = j
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A = 3J; A - 5 = 5(j -5) Substitute for A: 3J - 5 = 5J - 25 Subtract 3J from each side: -5 = 2J - 25 Add 5 to each side: 0 = 2J - 20 Add 20 to each side 20 = 2J Divide each side by 2: J = 10 so Alison is now 30. (5 yrs ago they were 25 & 5)