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2.64t+4t=12
We move all terms to the left:
2.64t+4t-(12)=0
We add all the numbers together, and all the variables
6.64t-12=0
We move all terms containing t to the left, all other terms to the right
6.64t=12
t=12/6.64
t=1+3.9411764705882/4.8823529411765
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