Question

ABCD is a rectangle. Find the value of x and y if CB=x-y, AB=30cm,AD=14cm,CD=x+y.
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Answer 1

by elimination method

x + y = 30

x-y = 14

2x=44

x=22

y=30-22=8

x=22 and y=8

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Answer 2

Answer:

Step-by-step explanation:

In a rectangle the diagonals are equal..

U must write this or else half marks gone..

x-y=14

x+y=30

As opposite sides are equal for a rectangle

x+y+x-y=44

2x=44

x=22

y=30-22

=8