\(\left(-35\right):63=-15:x\\ \dfrac{-35}{63}=\dfrac{-15}{x}\\ x=\dfrac{-15.63}{-35}=\dfrac{3.\left(-5\right).7.9}{-35}=\dfrac{3.\left(-35\right).9}{-35}=3.9=27\)
(-35) : 63 = -15 : \(x\)
\(x\) = (-15) : [ (-35) : 63]
\(x\) = -15 x \(\dfrac{63}{-35}\)
\(x\) = 27
(- 35) : 63 = - 15 : x
- 35/ 63 = - 15/ x
- 5/ 9 = - 15/ x
- 15/ 27 = - 15/ x
=> x = 27