Question

how to use cross multiplication method ..in chapter- 3(pair of two variables)


give example..


class -10

Answer 1

a₁x + b₁y + c₁ = 0

a₂x + b₂y + c₂ = 0

x/(b₁c₂ - b₂c₁) = y/(c₁a₂ - c₂a₁) = 1/(a₁b₂ - a₂b₁)
x = (b₁c₂ - b₂c₁)/(a₁b₂ - a₂b₁)

y = (c₁a₂ - c₂a₁)/(a₁b₂ - a₂b₁)

Answer 2

hi sukhman contact me I will explain it in breaf