Respuesta :
w=washer
d =dryer
w = d-151
w+d=699
substitute d-151 for the washer
d-151+d =699
combine like terms
2d-151 =699
add 151 to each side
2d =850
divide by 2
d = 450
w=washer
d =dryer
w = d-151
w+d=699
substitute d-151 for the washer
d-151+d =699
combine like terms
2d-151 =699
add 151 to each side
2d =850
divide by 2
d = 450