-7-6y=13
move -7 to the other side
sign changes from -7 to +7
-7+7-6y= 13+7
-6y= 20
divide both sides by -6 to get +y
also get y by itself
-6y/-6= 20/-6
y= 20/-6
reduce the fraction by dividing by 2
20/2=10
-6/2= -3
Answer:
y= -10/3 or y= -3 1/3
