in triangle pqr p=45 q=(3x+16) r=68
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68+45+3x+16=180 129+3x=180
3x=51
x=17
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q = 67°
Step-by-step explanation:
P+Q+R = 180° ---------- sum of measures of angles of triangle
45+3x+16+68= 180°
129+3x = 180°
3x = 180-129
3x = 51
q = 3x + 16
q = 51 + 16
q = 67°
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