Ab+5a+3b+15=24and a+3=6 then b+5=
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a+3= 6 → a = 3
Now , ab + 5a +3b + 15 = 24
→ 3b + 15 + 3b + 15 = 24
→ 6b = -6
→ b = -1
Now , b + 5 = 4
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