if 3x+4y=7, 4x+3y=7, find x and y.
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Step-by-step explanation:
your answer is here :
use identity
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Answer:
3x+4y=7 multiply (4)
4x+3y=7. multiply(3)
12x+16y=28
12x+9y=21
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7y=7
y=7/7
y=1
keep this value in 1st equation
3x+4(1)=7
3x+4=7
3x=7-4
3x=3
x=1
y=1,x=1
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