Step 1. Subtract 4y from both sides
5y + 18 - 4y = -3.2
Step 2. Simplify 5y + 1.8 -4y to y + 1.8
y + 1.8 = -3.2
Step 3. Subtract 1.8 from both sides
y = -3.2 - 1.8
Step 4. Simplify -3.2 - 1.8 to -5
y = -5
Your answer is A.
[tex]5y+1.8=4y-3.2\qquad|\text{subtract 1.8 from both sides}\\\\5y=4y-5\qquad|\text{subtract 4y from both sides}\\\\\boxed{y=-5}\to\boxed{a.}[/tex]
