x+y=9,x-y=y solve the linear equations by a suitable method
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I will solve it by substitution method
x - y = y
x = 2y
keep x = 2y in equation x + y= 9
2y + y = 9
y = 3
x= 2y
x= 6
x - y = y
x = 2y
keep x = 2y in equation x + y= 9
2y + y = 9
y = 3
x= 2y
x= 6
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diagonals of a trapezium ABCD with AB ll CD intersect each other at the point Of. if AB =2CD find the ratios of the areas of triangle AOB and. COD.
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