Question

find X + y by x minus y if one number is equal to X equal to 2 by 3 y equal to 3 by​

Answer 1

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Find the value of X and  Y if

2X+3Y=[2430] 3X+2Y=[2−1−25]

→ let Assume [2430] = A

[2−1−25] = B 

→2x+3y=A __ (i)

3x+2y=B __ (ii) 

→ multiple equation (i) with 2 & equation (ii) with (3)

4x+6y=2A

9x+6y=3B

________________

−5x=2A−3B

∴x=5−1[2A−3B]

∴x=53B−52A

=53[2−1−25]−5