Answer:
jhon =36 brad=48
Explanation:
B=J+12
J+B=84
12+J+J=84
2J=72
J=36
B=J+12=36+12=48
Hello,
John : n
Brad : n + 12
n + n + 12 = 84
2n + 12 = 84
2n = 84 - 12
2n = 72
n = 72/2
n = 36
John $36 and Brad $36 + $12 = $48
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