3j + j = 4j
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2 + 5j
Add the vectors by components. That is, add the "i" components, and separately add the "j" components.
It is (3j)^6.
c + j = 42; c + 5 = 3(j + 5) c = 42 - j so 42 - j + 5 = 3j + 15 ie 47 - j = 3j + 15 ie 4j = 32 so Jared is 8 and Chim 34 and in 5 years Jared will be 13 and Chim 39. QED
15j2(j + 2)