# algebra

What is the value of 3t+7 when you know -21t+1=3
I need to know how to figure this out not just the answer. Thank you

1. 👍 0
2. 👎 0
3. 👁 46
1. 3/3 + 7/3
t= 2.3333333333333

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2. 👎 0
posted by anu
2. we know -21t+1=3
-21t = 2
t = -2/21

then 3t+7
= 3(-2/21) + 7
= -2/7 + 7
= 47/7

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2. 👎 0
posted by Reiny

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