Question 333509
let the measure of angle  B be x deg

the complement will be 90-x

7 time scomplement = 7*(90-x)

..

The supplement will be 180-x

twice the supplement =2*(180-x)

..

7*(90-x)-2*(180-x)=220

630-7x-360+2x=220

-5x= 220+360-630

-5x=-50

x= -50/-5

x=10 deg