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90+x+28+6x-15=180
7x+103=180
7x= 77
x=11
therefore angle SQT is 11+28=39
angle TQR is 66-15=51
7x+103=180
7x= 77
x=11
therefore angle SQT is 11+28=39
angle TQR is 66-15=51
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