Answer:
its 3.5
Step-by-step explanation:
since we need to replace x with 6 the equation is now 3(6) + 8y = -10.
next i would multiply 3&6 to 18 then subtract 8y to the other side like this
18 + 8y = -10
- 8y -8y
18= -10 -8y
then i would add -10 to 18 on that side
18= -10 -8y
+10 +10
28 = 8y
then i divided
3.5 is my answer