0.16x+1.48=0.22x+0.91
16x+148=22x+91
148-91 =22x-16x
57 =6x
x =9.5
代入0.16x+1.48=y
16x +148 =100y
152+148 =100y
300 =100y
y=3
x =9.5
y=3