Math, asked by simran7938, 1 year ago

solve x and y 0.4x-1.5y=6.5,0.3x-0.2y=0.9

Answers

Answered by amitnrw
31

x = 217/37  &  y = 159/37  if 0.4x-1.5y=6.5,0.3x-0.2y=0.9

Step-by-step explanation:

0.4x -  1.5y  =  6.5     Eq1

0.3x - 0.2y = 0.9      Eq2

3 * Eq1  - 4 * Eq2

=> 1.2x - 1.2x - 4.5y + 0.8y = 19.5 - 3.6

=> -3.7y = 15.9

=> y = - 15.9/3.7

=> y = 159/37

0.3x-0.2y=0.9

=> 0.3x - 0.2 * 159/37 = 0.9

=> 11.1x  - 31.8 = 33.3

=> 11.1x = 65.1

=> x = 651/111

=> x = 217/37

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Answered by rakshapal08
0

Hope it helps

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