4.9+5.1= 3.7-2.8= 1.84+0.6= 6.6−5.62=
10-3.25= 4.04+6= 0.3+9.47= 5.89−0.98=
3.2+8−3.2= 19-2.26−6.74= 8.7+5.3−8.7+5.3=