Solve for t
t=-25
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0=1+0.04t
Divide both sides by 1000. Zero divided by any non-zero number gives zero.
1+0.04t=0
Swap sides so that all variable terms are on the left hand side.
0.04t=-1
Subtract 1 from both sides. Anything subtracted from zero gives its negation.
t=\frac{-1}{0.04}
Divide both sides by 0.04.
t=\frac{-100}{4}
Expand \frac{-1}{0.04} by multiplying both numerator and the denominator by 100.
t=-25
Divide -100 by 4 to get -25.
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