Solve the equations: b) (a + 109) * 30 = 6510 d - (240 * 13) = 1260 n + 1240 = 1060 * 20

105
1) (a + 109) * 30 = 6510 30a + 3270=6510 30a =6510-3270 30a =3240 2) d - (240 * 13) = 1260 d-3120=1260 =1260+3120 of =4380 3) n + 1240 = 1060 * 20 N +1240=21200 N =21200-1240 N =19960
7
Answer add