Answer:
38 degrees
Explanation:
DTU added to STD will make STU so we can make an equation for this
(4x+10)+(102)=19x+7
4x+112=19x+7
-4x. -4x
112=15x+7
-7. -7
105=15x
/15. /15
7=x
now to find DTU we fill in x
4(7)+10
28+10
hopes this helps
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