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7-8t=2+4(5-9t)
We move all terms to the left:
7-8t-(2+4(5-9t))=0
We add all the numbers together, and all the variables
-8t-(2+4(-9t+5))+7=0
We calculate terms in parentheses: -(2+4(-9t+5)), so:We get rid of parentheses
2+4(-9t+5)
determiningTheFunctionDomain 4(-9t+5)+2
We multiply parentheses
-36t+20+2
We add all the numbers together, and all the variables
-36t+22
Back to the equation:
-(-36t+22)
-8t+36t-22+7=0
We add all the numbers together, and all the variables
28t-15=0
We move all terms containing t to the left, all other terms to the right
28t=15
t=15/28
t=15/28
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