Question

(7x-12) and (3x-28) are two angles whose sum os 90. find the two angles

Answer 1

Answer:

79° and 11°

Step-by-step explanation:

adding 2 equations we get

7x-12+3x-28=90

10x-40=90

10x=130

x=13°

now 7x-12=79°

and 3x-28=11°