Answer:144
Explanation:
we calculate sum of all the angles inside any figure:
180*(n-2)--->n is number of its sides;
so, it has 4 sides, which, 180*2=360 degrees;
we have it's angles which their sum supposed to give us 360 degrees;
2x-19+x+17+3x+7+2x-37=8x-32
8x-32=360
8x=392
x=49
so, angle A =2x-19=2*49-19=98-19=79
and angle B=x+17=49+17=65
sum of A+B=65+79=144