Respuesta :
2a − 5d = 30
Subtracting 2a from both sides:-5d = 30 -2a
Dividing both sides by -5:d = (30 -2a) / -5
Subtracting 2a from both sides:-5d = 30 -2a
Dividing both sides by -5:d = (30 -2a) / -5