Math, asked by brainly188, 4 months ago

solve by substitution method

4x- 5y = 20
3x+ 5y = 15

please koi help kar doo

Answers

Answered by Tecky

1

Step-by-step explanation:

1> x - y = 20

-------------

5 x 4

x - y = 0

x = y

2> x + y = 15

----------

3 x 5

x + y = 0

x = - y

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