Question

(x-3 13/21)+2 10/21=7 2/21

Answer 1

$(x - 3 \frac{13}{21} ) + 2 \frac{10}{21} = 7 \frac{2}{21} \\ x - 3 \frac{13}{21} = 6 \frac{23}{21} - 2 \frac{10}{21} \\ x - 3 \frac{13}{21} = 4 \frac{13}{21} \\ x = 7 \frac{26}{21} \\ x = 8 \frac{5}{21}$

Answer 2

(x-76/21)+52/21=149/21
x-76/21+52/21=149/21
x-8/7=149/21
x=149/21+8/7
x=8 5/21