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Solve for a, t
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0.12t=900-0.1
Consider the second equation. Subtract 0.1 from both sides.
0.12t=899.9
Subtract 0.1 from 900 to get 899.9.
t=\frac{899.9}{0.12}
Divide both sides by 0.12.
t=\frac{89990}{12}
Expand \frac{899.9}{0.12} by multiplying both numerator and the denominator by 100.
t=\frac{44995}{6}
Reduce the fraction \frac{89990}{12} to lowest terms by extracting and canceling out 2.
a+\frac{44995}{6}=8000
Consider the first equation. Insert the known values of variables into the equation.
a=8000-\frac{44995}{6}
Subtract \frac{44995}{6} from both sides.
a=\frac{3005}{6}
Subtract \frac{44995}{6} from 8000 to get \frac{3005}{6}.
a=\frac{3005}{6} t=\frac{44995}{6}
The system is now solved.