## Algebra 1

$\frac{3}{-7}$ = $\frac{-9}{t}$ First, use the Cross Products Property. 3(t) = -7(-9) Simplify the right side of the equation. 3t = 63 (Note: A negative multiplied by a negative is a positive.) To find t, divide both sides of the equation by 3. $\frac{3t}{3}$ = $\frac{63}{3}$ t = 21