设红花为x朵;黄花为y朵;
(1)2x/5=y/2(整理后得(3)
4x-5y=0(两边×2)
(3)8x-10y=0
(2)2x/3-3y/4=5(整理,通分)得(4)
8x/12-9y/12=5
(4)8x-9y=60与(3)相减
(3)8x-10y=0
y=60 (朵)(黄花) 代入到(1)
4x=5y=5*60=300
x=75(朵)(红花)
设红花为x朵;黄花为y朵;
(1)2x/5=y/2(整理后得(3)
4x-5y=0(两边×2)
(3)8x-10y=0
(2)2x/3-3y/4=5(整理,通分)得(4)
8x/12-9y/12=5
(4)8x-9y=60与(3)相减
(3)8x-10y=0
y=60 (朵)(黄花) 代入到(1)
4x=5y=5*60=300
x=75(朵)(红花)