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How to Solve Simultaneous Equation with Casio fx991ms

SIMULTANEOUS EQUATION
1. Solve the following simultaneous equation
2x + 5y = 6½
5x – 2y = 9
(A)2, ½ (B)2, 3 (C) ½ ,3 (D)-2, ½
Solution Using Casio fx-991MS
[ON] [MODE] [MODE] [MODE] [1] [2] contd
2x + 5y = 6½       a1 + b1 = c1
5x – 2y = 9          a2 + b2 = C2
Where a1=2, b1=5, c1=6½, a2=5, b2=-2 c2=9
Contd [2] [=] [5] [=] [6] [a b /c] [1] [a b /c] [2] [=] [(-)] [2] [=] [9] [=] (x=2)  Press [↓] or [=] (y=0.5)
Option “A” is correct.

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