#### Answer

$\angle$x=39$^{\circ}$ and $\angle$y=51$^{\circ}$

#### Work Step by Step

y=x+12
x+y=90
x+(x+12)=90
2x=78
x=39
y=(39)+12
y=51

Published by
Brooks Cole

ISBN 10:
1439047901

ISBN 13:
978-1-43904-790-3

$\angle$x=39$^{\circ}$ and $\angle$y=51$^{\circ}$

y=x+12
x+y=90
x+(x+12)=90
2x=78
x=39
y=(39)+12
y=51

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