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10(t-4)+4t=7(2t+5)-9
We simplify the equation to the form, which is simple to understand
10(t-4)+4t=7(2t+5)-9
Reorder the terms in parentheses
+(+10t-40)+4t=7*(2t+5)-9
Remove unnecessary parentheses
+10t-40+4t=+7+*(+2t+5+)-9
Reorder the terms in parentheses
+10t-40+4t=+(+14t+35)-9
Remove unnecessary parentheses
+10t-40+4t=+14t+35-9
We move all terms containing t to the left and all other terms to the right.
+10t+4t-14t=+35-9+40
We simplify left and right side of the equation.
t=+66
0=66
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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