设李叔叔的存款为X,王叔叔的存款为Y.
X=7Y (1)
3(X-1500)=Y-1500 (2)
因为X=7Y
所以由1带入2
3(7Y-1500)=Y+1500
21Y-4500=Y+1500
21Y-Y=1500+4500
20Y=6000
Y=300
X=7*300
X=2100
答:李叔叔有2100元,王叔叔有300元.
设李叔叔的存款为X,王叔叔的存款为Y.
X=7Y (1)
3(X-1500)=Y-1500 (2)
因为X=7Y
所以由1带入2
3(7Y-1500)=Y+1500
21Y-4500=Y+1500
21Y-Y=1500+4500
20Y=6000
Y=300
X=7*300
X=2100
答:李叔叔有2100元,王叔叔有300元.