Math, asked by KARTHIKALAXMI, 5 hours ago

verify that x+y =|x| +|y| x= -3/4 y=-4/11​

Answers

Answered by aimyayon
1

Answer:

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]−52[24

Answered by Anonymous
1

x + y = (x) + (y) \\  \\  \frac{ - 3}{4}  +  \frac{ - 4}{11}  = ( \frac{ - 3}{4})  + ( \frac{ - 4}{11} ) \\  \\  \frac{ (- 3 \times 11) + ( - 4 \times 4)}{44}  =  \frac{ - 3}{4}  -  \frac{4}{11}  \\  \\  \frac{ - 33 - 16}{44}  =  \frac{ - 3 \times 11  - 4 \times 4}{44}  \\  \\  \frac{ - 49}{44}  =  \frac{ - 33 - 16}{44}  \\  \\  \frac{ - 49}{44}  =  \frac{ - 49}{44} .

L.H.S. = R.H.S.

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