Respuesta :

siya90258

Answer:

rhombus sides are equal.

7y=4y+21

7y-4y=21

3y=21

y=21/3

y=7

3x=45°(by alternate interior angle)

x=45/3

x=15

y
Rhombus has opposite angles equal therefore, 3x=45 and 4y+21=7y
3x=45
x=45/3
x=15

4y+21=7y
4y-7y= -21 multiply by -1
3y=21
y=21/3
y=7

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