solve by substitution method 2x+3y=9,4x-5y=7
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Answered by
4
Answer:
answer is 66
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Answered by
0
Answer:
Given,
2x= 9-3y
X= 9-3y/2. (1)
Now,
4x-5y =7
4 X 9-3y /2 - 5y = 7
18 - 6y - 5y = 7
18+7 = 11y
Y = 25/11
Now,
X =( 9-3 x 25/11) /2
=( 9-75) /22
= 66/22
= 3
Hence, X = 3 and Y = 25/11
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