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-8.9t+.03+3.4t=-8.21-7.8t
We move all terms to the left:
-8.9t+.03+3.4t-(-8.21-7.8t)=0
We add all the numbers together, and all the variables
-8.9t+3.4t-(-7.8t-8.21)+.03=0
We add all the numbers together, and all the variables
-5.5t-(-7.8t-8.21)+0.03=0
We get rid of parentheses
-5.5t+7.8t+8.21+0.03=0
We add all the numbers together, and all the variables
2.3t+8.24=0
We move all terms containing t to the left, all other terms to the right
2.3t=-8.24
t=-8.24/2.3
t=-3+1/1.7164179104478
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