Question

've been on this one for 30 minutes, help? Solve 8t + 16 > 16t - (12t - 20). A. {t| t > 1} B. {t| t > -1} C. {t| t < 4} D. {t| t > 4}

Answer 1

16t -(12t -20) = 4t +20
So you can rewrite 8t +16 > 16t -(12t -20) as 8t +16 > 4t +20
Divide both sides by four and you get:
2t +4 > t +5
So the answer is t > 1

Answer 2

8t +16 > 16t -(12t -20) may too many multiples of 4 in there

2t +4 > 4t -(3t -5)

much better

Answer 3

Thank you both