if jean and kim combined their weekly allowances they would have $12. Jeans allowance is $2 more than kim's allowance

jean's allowance is $7 and kim's allowance is $5

explanation:

k = kim

j = jean

j = k + 2

k = k

k + k + 2 = $12

2k + 2 = $12

2k (+2 - 2) = ($12 - 2)

= 2k = 10

2k/2 = 10/2

k = 5

j = k + 2

j = 5 + 2

j = 7

so, therefore, kim's allowance is $5 and jean's allowance is $7