-5t + 9 + 2t = 30
Combine like terms on the left side:
-3t + 9 = 30
Multiply both sides by -1"
3t - 9 = -30
Add 9 to both sides:
3t = -21
Divide both sides by 3:
t = -7
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5t
t - 2t - 3t = 32t - 5t = 32-4t = 32t = -8According to the information given in the question, t can't equal 8.
5t + rt = t(5+r)
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