Question

Solve by cross-multiplication method :

2 3 3 1 5; 9 0

x y x y

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Answer 1

Cross Multiplication Method. x = [(– 2 × (– z – 12)) – 3 × (3z – 20)] ÷ [(2 × 3) – (1 × – 2)]. Here, (3z – 20) and (– z – 12) are the respective c1 and c2. or, x = (– 7z + 84) ⁄ 8.

Answer 2

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Cross Multiplication Method.

x = [(– 2 × (– z – 12)) – 3 × (3z – 20)] ÷ [(2 × 3) – (1 × – 2)].

Here, (3z – 20) and (– z – 12) are the respective c1 and c2.

or, x = (– 7z + 84) ⁄ 8.