Hi, glad to help u. so, complimentary angles means two adjacent angles measured as a right angle which means two angles measured as 90 degrees! So 7x-3 and x+13 is a pair of complimentary angles. Then we can know( (7x-3)+(x+13)=90 8x+10=90 x=10 so 7x-3=67 x+13=23
