solve by cross multiplication 3x+y=13 and x-3y+9=0
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The correct answer is x is -6 and that of y is .
Given: 3x+y=13 and x-3y+9=0.
To Find: Solve by cross multiplication.
Solution:
Firstly, shift every term in left hand side.
Taking I and III
x = - 6
Taking II and III
y =
Hence, the value of x is -6 and that of y is .
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