Respuesta :
Add 21 to both sides: 70n=98
Divide each side by 70: n=98/70
Reduce the fraction: n=7/5
Divide each side by 70: n=98/70
Reduce the fraction: n=7/5
you would add 21 to 77 which equals 98. 70n=98 then put the 70 under the 98 and divide which = 1.4