Answer:
y = 77/32
Step-by-step explanation:
1) 6.4y-13.7=14.2-12.5 : Switch the left and right
2) 6.4y-13.7=1.7 : subtract the numbers
3) 6.4y=1.7+13.7 : separate the constants and variables
4) 6.4y=15.4 : add the numbers
5) 6.4y/6.4 = 15.4/6.4 : Divide both sides by 6.4
6) y = 77/32
Hope that helps