2 answers:
Answer:
CED = 117
Step-by-step explanation:
21x +21 = 7x +49
21x - 7x = 49 - 21
14x = 28
x = 28/14
x = 2
7x + 49
=7(2) + 49
=14 + 49
=63
180 -63 = 117
CED= 117
Answer:
7x+49=21x+21 ( vertically opposite side are equal )
49-21=21x-7x
28=14x
x=28÷14
x=2
hence, putting the value of x
7x+49=7×2+49
=63
21x+21=21×2+21
=63
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